38619901 has 2 divisors, whose sum is σ = 38619902. Its totient is φ = 38619900.

The previous prime is 38619883. The next prime is 38619923. The reversal of 38619901 is 10991683.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37527876 + 1092025 = 6126^2 + 1045^2 .

It is a cyclic number.

It is not a de Polignac number, because 38619901 - 2⁷ = 38619773 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38619941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19309950 + 19309951.

It is an arithmetic number, because the mean of its divisors is an integer number (19309951).

Almost surely, 2^38619901 is an apocalyptic number.

It is an amenable number.

38619901 is a deficient number, since it is larger than the sum of its proper divisors (1).

38619901 is an equidigital number, since it uses as much as digits as its factorization.

38619901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11664, while the sum is 37.

The square root of 38619901 is about 6214.4912100670. The cubic root of 38619901 is about 338.0158396228.

The spelling of 38619901 in words is "thirty-eight million, six hundred nineteen thousand, nine hundred one".