18749056 has 16 divisors (see below), whose sum is σ = 37351890. Its totient is φ = 9374464.

The previous prime is 18749009. The next prime is 18749057. The reversal of 18749056 is 65094781.

It can be written as a sum of positive squares in only one way, i.e., 13838400 + 4910656 = 3720^2 + 2216^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is a super-2 number, since 2×18749056² = 703054201782272, which contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (18749057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73111 + ... + 73366.

Almost surely, 2^18749056 is an apocalyptic number.

18749056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

18749056 is a deficient number, since it is larger than the sum of its proper divisors (18602834).

18749056 is an equidigital number, since it uses as much as digits as its factorization.

18749056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146491 (or 146479 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 40.

The square root of 18749056 is about 4330.0180138193. The cubic root of 18749056 is about 265.6601837778.

The spelling of 18749056 in words is "eighteen million, seven hundred forty-nine thousand, fifty-six".