18695164390 has 16 divisors (see below), whose sum is σ = 38458624032. Its totient is φ = 6409770624.

The previous prime is 18695164373. The next prime is 18695164417. The reversal of 18695164390 is 9346159681.

It is a congruent number.

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, 133536819 + ... + 133536958.

It is an arithmetic number, because the mean of its divisors is an integer number (2403664002).

Almost surely, 2^18695164390 is an apocalyptic number.

18695164390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18695164390 is an abundant number, since it is smaller than the sum of its proper divisors (19763459642).

18695164390 is a wasteful number, since it uses less digits than its factorization.

18695164390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267073791.

The product of its (nonzero) digits is 1399680, while the sum is 52.

The spelling of 18695164390 in words is "eighteen billion, six hundred ninety-five million, one hundred sixty-four thousand, three hundred ninety".