18476911157 has 4 divisors (see below), whose sum is σ = 18510690336. Its totient is φ = 18443131980.

The previous prime is 18476911151. The next prime is 18476911207. The reversal of 18476911157 is 75111967481.

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, and also an emirpimes, since its reverse is a distinct semiprime: 75111967481 = 313 ⋅239974337.

It is a cyclic number.

It is not a de Polignac number, because 18476911157 - 2⁸ = 18476910901 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 (18476911151) 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 3 ways as a sum of consecutive naturals, for example, 16888769 + ... + 16889862.

It is an arithmetic number, because the mean of its divisors is an integer number (4627672584).

Almost surely, 2^18476911157 is an apocalyptic number.

It is an amenable number.

18476911157 is a deficient number, since it is larger than the sum of its proper divisors (33779179).

18476911157 is an equidigital number, since it uses as much as digits as its factorization.

18476911157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33779178.

The product of its digits is 423360, while the sum is 50.

The spelling of 18476911157 in words is "eighteen billion, four hundred seventy-six million, nine hundred eleven thousand, one hundred fifty-seven".