38309157 has 6 divisors (see below), whose sum is σ = 55335462. Its totient is φ = 25539432.

The previous prime is 38309137. The next prime is 38309189. The reversal of 38309157 is 75190383.

It can be written as a sum of positive squares in only one way, i.e., 31371201 + 6937956 = 5601^2 + 2634^2 .

It is not a de Polignac number, because 38309157 - 2²² = 34114853 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38309137) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2128278 + ... + 2128295.

It is an arithmetic number, because the mean of its divisors is an integer number (9222577).

Almost surely, 2^38309157 is an apocalyptic number.

It is an amenable number.

38309157 is a deficient number, since it is larger than the sum of its proper divisors (17026305).

38309157 is a wasteful number, since it uses less digits than its factorization.

38309157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4256579 (or 4256576 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 36.

The square root of 38309157 is about 6189.4391506824. The cubic root of 38309157 is about 337.1068145472.

The spelling of 38309157 in words is "thirty-eight million, three hundred nine thousand, one hundred fifty-seven".