18841480 has 48 divisors (see below), whose sum is σ = 49319820. Its totient is φ = 6459264.

The previous prime is 18841451. The next prime is 18841499. The reversal of 18841480 is 8414881.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 17288964 + 1552516 = 4158^2 + 1246^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2847 + ... + 6766.

Almost surely, 2^18841480 is an apocalyptic number.

18841480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18841480 is an abundant number, since it is smaller than the sum of its proper divisors (30478340).

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

18841480 is a wasteful number, since it uses less digits than its factorization.

18841480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9638 (or 9627 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 34.

The square root of 18841480 is about 4340.6773664948. The cubic root of 18841480 is about 266.0959949004.

It can be divided in two parts, 18841 and 480, that added together give a square (19321 = 139²).

The spelling of 18841480 in words is "eighteen million, eight hundred forty-one thousand, four hundred eighty".