30186019972 has 12 divisors (see below), whose sum is σ = 52834450396. Its totient is φ = 15090462720.

The previous prime is 30186019901. The next prime is 30186020003. The reversal of 30186019972 is 27991068103.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 10713492036 + 19472527936 = 103506^2 + 139544^2 .

It is a super-2 number, since 2×30186019972² (a number of 22 digits) contains 22 as substring.

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, 610029 + ... + 657652.

Almost surely, 2^30186019972 is an apocalyptic number.

It is an amenable number.

30186019972 is a deficient number, since it is larger than the sum of its proper divisors (22648430424).

30186019972 is a wasteful number, since it uses less digits than its factorization.

30186019972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1273638 (or 1273636 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 46.

The spelling of 30186019972 in words is "thirty billion, one hundred eighty-six million, nineteen thousand, nine hundred seventy-two".