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1913414143 = 9728170199
BaseRepresentation
bin111001000001100…
…0110000111111111
311221100102111202111
41302003012013333
512404313223033
6513511034451
765262515614
oct16203060777
94840374674
101913414143
118a2088403
1245496ba27
1324654c424
1414219a50b
15b2eac7cd
hex720c61ff

1913414143 has 8 divisors (see below), whose sum is σ = 1940047200. Its totient is φ = 1886922240.

The previous prime is 1913414101. The next prime is 1913414161. The reversal of 1913414143 is 3414143191.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-1913414143 is a prime.

It is a super-2 number, since 2×19134141432 = 7322307365264848898, 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 (1913414543) 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, 7843 + ... + 62356.

It is an arithmetic number, because the mean of its divisors is an integer number (242505900).

Almost surely, 21913414143 is an apocalyptic number.

1913414143 is a deficient number, since it is larger than the sum of its proper divisors (26633057).

1913414143 is an equidigital number, since it uses as much as digits as its factorization.

1913414143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70577.

The product of its digits is 5184, while the sum is 31.

The square root of 1913414143 is about 43742.5895781217. The cubic root of 1913414143 is about 1241.4702779729.

The spelling of 1913414143 in words is "one billion, nine hundred thirteen million, four hundred fourteen thousand, one hundred forty-three".

Divisors: 1 97 281 27257 70199 6809303 19725919 1913414143