38951668 has 18 divisors (see below), whose sum is σ = 79294866. Its totient is φ = 16693488.

The previous prime is 38951659. The next prime is 38951677. The reversal of 38951668 is 86615983.

38951668 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (38951659) and next prime (38951677).

It can be written as a sum of positive squares in only one way, i.e., 37601424 + 1350244 = 6132^2 + 1162^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 99171 + ... + 99562.

Almost surely, 2^38951668 is an apocalyptic number.

It is an amenable number.

38951668 is an abundant number, since it is smaller than the sum of its proper divisors (40343198).

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

38951668 is a wasteful number, since it uses less digits than its factorization.

38951668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198751 (or 198742 counting only the distinct ones).

The product of its digits is 311040, while the sum is 46.

The square root of 38951668 is about 6241.1271417910. The cubic root of 38951668 is about 338.9809974759.

The spelling of 38951668 in words is "thirty-eight million, nine hundred fifty-one thousand, six hundred sixty-eight".