238193157949 has 2 divisors, whose sum is σ = 238193157950. Its totient is φ = 238193157948.

The previous prime is 238193157941. The next prime is 238193157977. The reversal of 238193157949 is 949751391832.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 190984732324 + 47208425625 = 437018^2 + 217275^2 .

It is a cyclic number.

It is not a de Polignac number, because 238193157949 - 2³ = 238193157941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (238193157941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119096578974 + 119096578975.

It is an arithmetic number, because the mean of its divisors is an integer number (119096578975).

Almost surely, 2^238193157949 is an apocalyptic number.

It is an amenable number.

238193157949 is a deficient number, since it is larger than the sum of its proper divisors (1).

238193157949 is an equidigital number, since it uses as much as digits as its factorization.

238193157949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14696640, while the sum is 61.

The spelling of 238193157949 in words is "two hundred thirty-eight billion, one hundred ninety-three million, one hundred fifty-seven thousand, nine hundred forty-nine".