18657894083 has 2 divisors, whose sum is σ = 18657894084. Its totient is φ = 18657894082.

The previous prime is 18657894049. The next prime is 18657894097. The reversal of 18657894083 is 38049875681.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18657894083 - 2³⁰ = 17584152259 is a prime.

It is a super-2 number, since 2×18657894083² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (18657894023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9328947041 + 9328947042.

It is an arithmetic number, because the mean of its divisors is an integer number (9328947042).

Almost surely, 2^18657894083 is an apocalyptic number.

18657894083 is a deficient number, since it is larger than the sum of its proper divisors (1).

18657894083 is an equidigital number, since it uses as much as digits as its factorization.

18657894083 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11612160, while the sum is 59.

The spelling of 18657894083 in words is "eighteen billion, six hundred fifty-seven million, eight hundred ninety-four thousand, eighty-three".