478611137 has 2 divisors, whose sum is σ = 478611138. Its totient is φ = 478611136.

The previous prime is 478611109. The next prime is 478611181. The reversal of 478611137 is 731116874.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 283282561 + 195328576 = 16831^2 + 13976^2 .

It is a cyclic number.

It is not a de Polignac number, because 478611137 - 2¹⁸ = 478348993 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 478611137.

It is not a weakly prime, because it can be changed into another prime (478611187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 239305568 + 239305569.

It is an arithmetic number, because the mean of its divisors is an integer number (239305569).

Almost surely, 2^478611137 is an apocalyptic number.

It is an amenable number.

478611137 is a deficient number, since it is larger than the sum of its proper divisors (1).

478611137 is an equidigital number, since it uses as much as digits as its factorization.

478611137 is an evil number, because the sum of its binary digits is even.

The product of its digits is 28224, while the sum is 38.

The square root of 478611137 is about 21877.1830225009. The cubic root of 478611137 is about 782.2176299848.

The spelling of 478611137 in words is "four hundred seventy-eight million, six hundred eleven thousand, one hundred thirty-seven".