938237849 has 2 divisors, whose sum is σ = 938237850. Its totient is φ = 938237848.

The previous prime is 938237843. The next prime is 938237857. The reversal of 938237849 is 948732839.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 866242624 + 71995225 = 29432^2 + 8485^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-938237849 is a prime.

It is a super-2 number, since 2×938237849² = 1760580522592293602, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 938237849.

It is not a weakly prime, because it can be changed into another prime (938237843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 469118924 + 469118925.

It is an arithmetic number, because the mean of its divisors is an integer number (469118925).

Almost surely, 2^938237849 is an apocalyptic number.

It is an amenable number.

938237849 is a deficient number, since it is larger than the sum of its proper divisors (1).

938237849 is an equidigital number, since it uses as much as digits as its factorization.

938237849 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2612736, while the sum is 53.

The square root of 938237849 is about 30630.6684386743. The cubic root of 938237849 is about 978.9736057319.

The spelling of 938237849 in words is "nine hundred thirty-eight million, two hundred thirty-seven thousand, eight hundred forty-nine".