838149311 has 4 divisors (see below), whose sum is σ = 839044752. Its totient is φ = 837253872.

The previous prime is 838149293. The next prime is 838149331. The reversal of 838149311 is 113941838.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 838149311 - 2²² = 833955007 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (838149331) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 446315 + ... + 448188.

It is an arithmetic number, because the mean of its divisors is an integer number (209761188).

Almost surely, 2^838149311 is an apocalyptic number.

838149311 is a deficient number, since it is larger than the sum of its proper divisors (895441).

838149311 is an equidigital number, since it uses as much as digits as its factorization.

838149311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 895440.

The product of its digits is 20736, while the sum is 38.

The square root of 838149311 is about 28950.8084688494. The cubic root of 838149311 is about 942.8453512813.

The spelling of 838149311 in words is "eight hundred thirty-eight million, one hundred forty-nine thousand, three hundred eleven".