38649371 has 2 divisors, whose sum is σ = 38649372. Its totient is φ = 38649370.

The previous prime is 38649353. The next prime is 38649383. The reversal of 38649371 is 17394683.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 38649371 - 2²² = 34455067 is a prime.

It is not a weakly prime, because it can be changed into another prime (38649301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19324685 + 19324686.

It is an arithmetic number, because the mean of its divisors is an integer number (19324686).

Almost surely, 2^38649371 is an apocalyptic number.

38649371 is a deficient number, since it is larger than the sum of its proper divisors (1).

38649371 is an equidigital number, since it uses as much as digits as its factorization.

38649371 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108864, while the sum is 41.

The square root of 38649371 is about 6216.8618289294. The cubic root of 38649371 is about 338.1017952558.

The spelling of 38649371 in words is "thirty-eight million, six hundred forty-nine thousand, three hundred seventy-one".