18401474 has 16 divisors (see below), whose sum is σ = 33972288. Its totient is φ = 7279632.

The previous prime is 18401473. The next prime is 18401479. The reversal of 18401474 is 47410481.

It is a super-2 number, since 2×18401474² = 677228490745352, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18401473) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50372 + ... + 50735.

It is an arithmetic number, because the mean of its divisors is an integer number (2123268).

Almost surely, 2^18401474 is an apocalyptic number.

18401474 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

18401474 is a deficient number, since it is larger than the sum of its proper divisors (15570814).

18401474 is a wasteful number, since it uses less digits than its factorization.

18401474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101129.

The product of its (nonzero) digits is 3584, while the sum is 29.

The square root of 18401474 is about 4289.6939284756. The cubic root of 18401474 is about 264.0082737689.

The spelling of 18401474 in words is "eighteen million, four hundred one thousand, four hundred seventy-four".