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1913794031 = 37389132967
BaseRepresentation
bin111001000010010…
…0010110111101111
311221101010210212102
41302010202313233
512404412402111
6513523125315
765265660302
oct16204426757
94841123772
101913794031
118a2317866
12454b1383b
13246653306
14142258b39
15b303513b
hex72122def

1913794031 has 8 divisors (see below), whose sum is σ = 1970585760. Its totient is φ = 1857269088.

The previous prime is 1913794007. The next prime is 1913794037. The reversal of 1913794031 is 1304973191.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1913794031 - 214 = 1913777647 is a prime.

It is a super-2 number, since 2×19137940312 = 7325215186182457922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1913794037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52091 + ... + 80876.

It is an arithmetic number, because the mean of its divisors is an integer number (246323220).

Almost surely, 21913794031 is an apocalyptic number.

1913794031 is a deficient number, since it is larger than the sum of its proper divisors (56791729).

1913794031 is a wasteful number, since it uses less digits than its factorization.

1913794031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133393.

The product of its (nonzero) digits is 20412, while the sum is 38.

The square root of 1913794031 is about 43746.9316752615. The cubic root of 1913794031 is about 1241.5524327701.

The spelling of 1913794031 in words is "one billion, nine hundred thirteen million, seven hundred ninety-four thousand, thirty-one".

Divisors: 1 37 389 14393 132967 4919779 51724163 1913794031