38936731 has 2 divisors, whose sum is σ = 38936732. Its totient is φ = 38936730.

The previous prime is 38936717. The next prime is 38936741. The reversal of 38936731 is 13763983.

It is a strong prime.

It is an emirp because it is prime and its reverse (13763983) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38936731 is a prime.

It is a super-2 number, since 2×38936731² = 3032138041932722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (38936741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19468365 + 19468366.

It is an arithmetic number, because the mean of its divisors is an integer number (19468366).

Almost surely, 2^38936731 is an apocalyptic number.

38936731 is a deficient number, since it is larger than the sum of its proper divisors (1).

38936731 is an equidigital number, since it uses as much as digits as its factorization.

38936731 is an evil number, because the sum of its binary digits is even.

The product of its digits is 81648, while the sum is 40.

The square root of 38936731 is about 6239.9303682012. The cubic root of 38936731 is about 338.9376616636.

The spelling of 38936731 in words is "thirty-eight million, nine hundred thirty-six thousand, seven hundred thirty-one".