38912149 has 2 divisors, whose sum is σ = 38912150. Its totient is φ = 38912148.

The previous prime is 38912147. The next prime is 38912177. The reversal of 38912149 is 94121983.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37332100 + 1580049 = 6110^2 + 1257^2 .

It is a cyclic number.

It is not a de Polignac number, because 38912149 - 2¹ = 38912147 is a prime.

Together with 38912147, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38912147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19456074 + 19456075.

It is an arithmetic number, because the mean of its divisors is an integer number (19456075).

Almost surely, 2^38912149 is an apocalyptic number.

It is an amenable number.

38912149 is a deficient number, since it is larger than the sum of its proper divisors (1).

38912149 is an equidigital number, since it uses as much as digits as its factorization.

38912149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15552, while the sum is 37.

The square root of 38912149 is about 6237.9603236956. The cubic root of 38912149 is about 338.8663192629.

The spelling of 38912149 in words is "thirty-eight million, nine hundred twelve thousand, one hundred forty-nine".