18386161770 has 32 divisors (see below), whose sum is σ = 45203054400. Its totient is φ = 4783391360.

The previous prime is 18386161711. The next prime is 18386161777. The reversal of 18386161770 is 7716168381.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (18386161777) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7472820 + ... + 7475279.

It is an arithmetic number, because the mean of its divisors is an integer number (1412595450).

Almost surely, 2^18386161770 is an apocalyptic number.

18386161770 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18386161770 is an abundant number, since it is smaller than the sum of its proper divisors (26816892630).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18386161770 is a wasteful number, since it uses less digits than its factorization.

18386161770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14948150.

The product of its (nonzero) digits is 338688, while the sum is 48.

The spelling of 18386161770 in words is "eighteen billion, three hundred eighty-six million, one hundred sixty-one thousand, seven hundred seventy".