18457136 has 20 divisors (see below), whose sum is σ = 36348864. Its totient is φ = 9076800.

The previous prime is 18457133. The next prime is 18457139. The reversal of 18457136 is 63175481.

It is an interprime number because it is at equal distance from previous prime (18457133) and next prime (18457139).

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 18457096 and 18457105.

It is not an unprimeable number, because it can be changed into a prime (18457133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8480 + ... + 10431.

Almost surely, 2^18457136 is an apocalyptic number.

18457136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

18457136 is a deficient number, since it is larger than the sum of its proper divisors (17891728).

18457136 is a wasteful number, since it uses less digits than its factorization.

18457136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18980 (or 18974 counting only the distinct ones).

The product of its digits is 20160, while the sum is 35.

The square root of 18457136 is about 4296.1769051099. The cubic root of 18457136 is about 264.2742023995.

It can be divided in two parts, 18457 and 136, that multiplied together give a palindrome (2510152).

The spelling of 18457136 in words is "eighteen million, four hundred fifty-seven thousand, one hundred thirty-six".