18958111852 has 12 divisors (see below), whose sum is σ = 33985883736. Its totient is φ = 9247859360.

The previous prime is 18958111847. The next prime is 18958111883. The reversal of 18958111852 is 25811185981.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 18958111796 and 18958111805.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57798958 + ... + 57799285.

It is an arithmetic number, because the mean of its divisors is an integer number (2832156978).

Almost surely, 2^18958111852 is an apocalyptic number.

It is an amenable number.

18958111852 is a deficient number, since it is larger than the sum of its proper divisors (15027771884).

18958111852 is a wasteful number, since it uses less digits than its factorization.

18958111852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115598288 (or 115598286 counting only the distinct ones).

The product of its digits is 230400, while the sum is 49.

The spelling of 18958111852 in words is "eighteen billion, nine hundred fifty-eight million, one hundred eleven thousand, eight hundred fifty-two".