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1913082368 = 2919332
BaseRepresentation
bin111001000000111…
…0101001000000000
311221022210122122112
41302001311020000
512404222113433
6513455554452
765256634421
oct16201651000
94838718575
101913082368
118a198110a
1245482ba28
13246464402
14142111648
15b2e44348
hex72075200

1913082368 has 30 divisors (see below), whose sum is σ = 3824406729. Its totient is φ = 956046336.

The previous prime is 1913082359. The next prime is 1913082377. The reversal of 1913082368 is 8632803191.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It is an interprime number because it is at equal distance from previous prime (1913082359) and next prime (1913082377).

It can be written as a sum of positive squares in 2 ways, for example, as 1848312064 + 64770304 = 42992^2 + 8048^2 .

It is an ABA number since it can be written as A⋅BA, here for A=2, B=30928.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 988730 + ... + 990662.

Almost surely, 21913082368 is an apocalyptic number.

It is an amenable number.

1913082368 is a deficient number, since it is larger than the sum of its proper divisors (1911324361).

1913082368 is an frugal number, since it uses more digits than its factorization.

1913082368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3884 (or 1935 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 41.

The square root of 1913082368 is about 43738.7970570751. The cubic root of 1913082368 is about 1241.3985192248.

The spelling of 1913082368 in words is "one billion, nine hundred thirteen million, eighty-two thousand, three hundred sixty-eight".

Divisors: 1 2 4 8 16 32 64 128 256 512 1933 3866 7732 15464 30928 61856 123712 247424 494848 989696 3736489 7472978 14945956 29891912 59783824 119567648 239135296 478270592 956541184 1913082368