38681910 has 48 divisors (see below), whose sum is σ = 105870960. Its totient is φ = 9771840.

The previous prime is 38681899. The next prime is 38681917. The reversal of 38681910 is 1918683.

It is a super-2 number, since 2×38681910² = 2992580322496200, which contains 22 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38681917) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9601 + ... + 13020.

It is an arithmetic number, because the mean of its divisors is an integer number (2205645).

Almost surely, 2^38681910 is an apocalyptic number.

38681910 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

38681910 is an abundant number, since it is smaller than the sum of its proper divisors (67189050).

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

38681910 is a wasteful number, since it uses less digits than its factorization.

38681910 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22653 (or 22650 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The square root of 38681910 is about 6219.4782739391. The cubic root of 38681910 is about 338.1966515504.

It can be divided in two parts, 3868 and 1910, that added together give a triangular number (5778 = T₁₀₇).

The spelling of 38681910 in words is "thirty-eight million, six hundred eighty-one thousand, nine hundred ten".