838149331 has 2 divisors, whose sum is σ = 838149332. Its totient is φ = 838149330.

The previous prime is 838149293. The next prime is 838149343. The reversal of 838149331 is 133941838.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 838149331 - 2²⁷ = 703931603 is a prime.

It is a super-2 number, since 2×838149331² = 1404988602111495122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (838149031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 419074665 + 419074666.

It is an arithmetic number, because the mean of its divisors is an integer number (419074666).

Almost surely, 2^838149331 is an apocalyptic number.

838149331 is a deficient number, since it is larger than the sum of its proper divisors (1).

838149331 is an equidigital number, since it uses as much as digits as its factorization.

838149331 is an evil number, because the sum of its binary digits is even.

The product of its digits is 62208, while the sum is 40.

The square root of 838149331 is about 28950.8088142629. The cubic root of 838149331 is about 942.8453587807.

The spelling of 838149331 in words is "eight hundred thirty-eight million, one hundred forty-nine thousand, three hundred thirty-one".