18961474 has 8 divisors (see below), whose sum is σ = 32505408. Its totient is φ = 8126340.

The previous prime is 18961451. The next prime is 18961483. The reversal of 18961474 is 47416981.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 677182 + ... + 677209.

It is an arithmetic number, because the mean of its divisors is an integer number (4063176).

Almost surely, 2^18961474 is an apocalyptic number.

18961474 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

18961474 is a deficient number, since it is larger than the sum of its proper divisors (13543934).

18961474 is a wasteful number, since it uses less digits than its factorization.

18961474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1354400.

The product of its digits is 48384, while the sum is 40.

The square root of 18961474 is about 4354.4774657816. The cubic root of 18961474 is about 266.6596869701.

The spelling of 18961474 in words is "eighteen million, nine hundred sixty-one thousand, four hundred seventy-four".