18496610957 has 4 divisors (see below), whose sum is σ = 20178121056. Its totient is φ = 16815100860.

The previous prime is 18496610947. The next prime is 18496610981. The reversal of 18496610957 is 75901669481.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 18496610957 - 2⁸ = 18496610701 is a prime.

It is a super-2 number, since 2×18496610957² (a number of 21 digits) 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 (18496610947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 840755033 + ... + 840755054.

It is an arithmetic number, because the mean of its divisors is an integer number (5044530264).

Almost surely, 2^18496610957 is an apocalyptic number.

It is an amenable number.

18496610957 is a deficient number, since it is larger than the sum of its proper divisors (1681510099).

18496610957 is a wasteful number, since it uses less digits than its factorization.

18496610957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1681510098.

The product of its (nonzero) digits is 3265920, while the sum is 56.

The spelling of 18496610957 in words is "eighteen billion, four hundred ninety-six million, six hundred ten thousand, nine hundred fifty-seven".