238157188063 has 2 divisors, whose sum is σ = 238157188064. Its totient is φ = 238157188062.

The previous prime is 238157188043. The next prime is 238157188067. The reversal of 238157188063 is 360881751832.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-238157188063 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 238157188063.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (238157188067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119078594031 + 119078594032.

It is an arithmetic number, because the mean of its divisors is an integer number (119078594032).

Almost surely, 2^238157188063 is an apocalyptic number.

238157188063 is a deficient number, since it is larger than the sum of its proper divisors (1).

238157188063 is an equidigital number, since it uses as much as digits as its factorization.

238157188063 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1935360, while the sum is 52.

The spelling of 238157188063 in words is "two hundred thirty-eight billion, one hundred fifty-seven million, one hundred eighty-eight thousand, sixty-three".