18930027970 has 16 divisors (see below), whose sum is σ = 38941771968. Its totient is φ = 6490295280.

The previous prime is 18930027913. The next prime is 18930027989. The reversal of 18930027970 is 7972003981.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 18930027970.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 135214416 + ... + 135214555.

It is an arithmetic number, because the mean of its divisors is an integer number (2433860748).

Almost surely, 2^18930027970 is an apocalyptic number.

18930027970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18930027970 is an abundant number, since it is smaller than the sum of its proper divisors (20011743998).

18930027970 is a wasteful number, since it uses less digits than its factorization.

18930027970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270428985.

The product of its (nonzero) digits is 190512, while the sum is 46.

The spelling of 18930027970 in words is "eighteen billion, nine hundred thirty million, twenty-seven thousand, nine hundred seventy".