18494696957 has 16 divisors (see below), whose sum is σ = 22161323520. Its totient is φ = 15235902000.

The previous prime is 18494696947. The next prime is 18494696981. The reversal of 18494696957 is 75969649481.

It is not a de Polignac number, because 18494696957 - 2¹⁸ = 18494434813 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18494696917) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1918919 + ... + 1928532.

It is an arithmetic number, because the mean of its divisors is an integer number (1385082720).

Almost surely, 2^18494696957 is an apocalyptic number.

It is an amenable number.

18494696957 is a deficient number, since it is larger than the sum of its proper divisors (3666626563).

18494696957 is a wasteful number, since it uses less digits than its factorization.

18494696957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3847504.

The product of its digits is 117573120, while the sum is 68.

The spelling of 18494696957 in words is "eighteen billion, four hundred ninety-four million, six hundred ninety-six thousand, nine hundred fifty-seven".