38664751 has 2 divisors, whose sum is σ = 38664752. Its totient is φ = 38664750.

The previous prime is 38664739. The next prime is 38664761. The reversal of 38664751 is 15746683.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (15746683) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 38664751 - 2⁷ = 38664623 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38664701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19332375 + 19332376.

It is an arithmetic number, because the mean of its divisors is an integer number (19332376).

Almost surely, 2^38664751 is an apocalyptic number.

38664751 is a deficient number, since it is larger than the sum of its proper divisors (1).

38664751 is an equidigital number, since it uses as much as digits as its factorization.

38664751 is an evil number, because the sum of its binary digits is even.

The product of its digits is 120960, while the sum is 40.

The square root of 38664751 is about 6218.0986643829. The cubic root of 38664751 is about 338.1466370033.

The spelling of 38664751 in words is "thirty-eight million, six hundred sixty-four thousand, seven hundred fifty-one".