6157643431 has 4 divisors (see below), whose sum is σ = 6159946312. Its totient is φ = 6155340552.

The previous prime is 6157643411. The next prime is 6157643449. The reversal of 6157643431 is 1343467516.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6157643431 - 2⁹ = 6157642919 is a prime.

It is a super-2 number, since 2×6157643431² = 75833145246674903522, 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 (6157643411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1147425 + ... + 1152778.

It is an arithmetic number, because the mean of its divisors is an integer number (1539986578).

Almost surely, 2^6157643431 is an apocalyptic number.

6157643431 is a deficient number, since it is larger than the sum of its proper divisors (2302881).

6157643431 is a wasteful number, since it uses less digits than its factorization.

6157643431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2302880.

The product of its digits is 181440, while the sum is 40.

The square root of 6157643431 is about 78470.6533106486. The cubic root of 6157643431 is about 1832.8975002078.

The spelling of 6157643431 in words is "six billion, one hundred fifty-seven million, six hundred forty-three thousand, four hundred thirty-one".