18494257270 has 32 divisors (see below), whose sum is σ = 33770196000. Its totient is φ = 7291065600.

The previous prime is 18494257253. The next prime is 18494257333. The reversal of 18494257270 is 7275249481.

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, 1085820 + ... + 1102720.

It is an arithmetic number, because the mean of its divisors is an integer number (1055318625).

Almost surely, 2^18494257270 is an apocalyptic number.

18494257270 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18494257270 is a deficient number, since it is larger than the sum of its proper divisors (15275938730).

18494257270 is a wasteful number, since it uses less digits than its factorization.

18494257270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18480.

The product of its (nonzero) digits is 1128960, while the sum is 49.

The spelling of 18494257270 in words is "eighteen billion, four hundred ninety-four million, two hundred fifty-seven thousand, two hundred seventy".