418238730157 has 2 divisors, whose sum is σ = 418238730158. Its totient is φ = 418238730156.

The previous prime is 418238730121. The next prime is 418238730187. The reversal of 418238730157 is 751037832814.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 417973887081 + 264843076 = 646509^2 + 16274^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-418238730157 is a prime.

It is a super-2 number, since 2×418238730157² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 418238730157.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (418238730187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 209119365078 + 209119365079.

It is an arithmetic number, because the mean of its divisors is an integer number (209119365079).

Almost surely, 2^418238730157 is an apocalyptic number.

It is an amenable number.

418238730157 is a deficient number, since it is larger than the sum of its proper divisors (1).

418238730157 is an equidigital number, since it uses as much as digits as its factorization.

418238730157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1128960, while the sum is 49.

The spelling of 418238730157 in words is "four hundred eighteen billion, two hundred thirty-eight million, seven hundred thirty thousand, one hundred fifty-seven".