18376919811 has 12 divisors (see below), whose sum is σ = 28105877592. Its totient is φ = 11530616256.

The previous prime is 18376919809. The next prime is 18376919819. The reversal of 18376919811 is 11891967381.

It is not a de Polignac number, because 18376919811 - 2¹ = 18376919809 is a prime.

It is a super-2 number, since 2×18376919811² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18376919819) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 60055141 + ... + 60055446.

It is an arithmetic number, because the mean of its divisors is an integer number (2342156466).

Almost surely, 2^18376919811 is an apocalyptic number.

18376919811 is a deficient number, since it is larger than the sum of its proper divisors (9728957781).

18376919811 is a wasteful number, since it uses less digits than its factorization.

18376919811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120110610 (or 120110607 counting only the distinct ones).

The product of its digits is 653184, while the sum is 54.

The spelling of 18376919811 in words is "eighteen billion, three hundred seventy-six million, nine hundred nineteen thousand, eight hundred eleven".