18197605470 has 32 divisors (see below), whose sum is σ = 47644640640. Its totient is φ = 4411540640.

The previous prime is 18197605441. The next prime is 18197605493. The reversal of 18197605470 is 7450679181.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27571800 + ... + 27572459.

It is an arithmetic number, because the mean of its divisors is an integer number (1488895020).

Almost surely, 2^18197605470 is an apocalyptic number.

18197605470 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18197605470 is an abundant number, since it is smaller than the sum of its proper divisors (29447035170).

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

18197605470 is a wasteful number, since it uses less digits than its factorization.

18197605470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55144280.

The product of its (nonzero) digits is 423360, while the sum is 48.

The spelling of 18197605470 in words is "eighteen billion, one hundred ninety-seven million, six hundred five thousand, four hundred seventy".