18913460 has 12 divisors (see below), whose sum is σ = 39718308. Its totient is φ = 7565376.

The previous prime is 18913457. The next prime is 18913471. The reversal of 18913460 is 6431981.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 13586596 + 5326864 = 3686^2 + 2308^2 .

It is a congruent number.

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, 472817 + ... + 472856.

It is an arithmetic number, because the mean of its divisors is an integer number (3309859).

Almost surely, 2^18913460 is an apocalyptic number.

18913460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18913460 is an abundant number, since it is smaller than the sum of its proper divisors (20804848).

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

18913460 is a wasteful number, since it uses less digits than its factorization.

18913460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 945682 (or 945680 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 18913460 is about 4348.9607954085. The cubic root of 18913460 is about 266.4344193159.

The spelling of 18913460 in words is "eighteen million, nine hundred thirteen thousand, four hundred sixty".