38861845 has 16 divisors (see below), whose sum is σ = 51492672. Its totient is φ = 27919360.

The previous prime is 38861833. The next prime is 38861857. The reversal of 38861845 is 54816883.

It is an interprime number because it is at equal distance from previous prime (38861833) and next prime (38861857).

It is a de Polignac number, because none of the positive numbers 2^k-38861845 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 309 + ... + 8821.

It is an arithmetic number, because the mean of its divisors is an integer number (3218292).

Almost surely, 2^38861845 is an apocalyptic number.

It is an amenable number.

38861845 is a deficient number, since it is larger than the sum of its proper divisors (12630827).

38861845 is a wasteful number, since it uses less digits than its factorization.

38861845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8612.

The product of its digits is 184320, while the sum is 43.

The square root of 38861845 is about 6233.9269325201. The cubic root of 38861845 is about 338.7202322213.

The spelling of 38861845 in words is "thirty-eight million, eight hundred sixty-one thousand, eight hundred forty-five".