476135981 has 2 divisors, whose sum is σ = 476135982. Its totient is φ = 476135980.

The previous prime is 476135977. The next prime is 476135987. The reversal of 476135981 is 189531674.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 411075625 + 65060356 = 20275^2 + 8066^2 .

It is a cyclic number.

It is not a de Polignac number, because 476135981 - 2² = 476135977 is a prime.

It is a super-2 number, since 2×476135981² = 453410944805664722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (476135987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 238067990 + 238067991.

It is an arithmetic number, because the mean of its divisors is an integer number (238067991).

Almost surely, 2^476135981 is an apocalyptic number.

It is an amenable number.

476135981 is a deficient number, since it is larger than the sum of its proper divisors (1).

476135981 is an equidigital number, since it uses as much as digits as its factorization.

476135981 is an evil number, because the sum of its binary digits is even.

The product of its digits is 181440, while the sum is 44.

The square root of 476135981 is about 21820.5403461967. The cubic root of 476135981 is about 780.8668759039.

The spelling of 476135981 in words is "four hundred seventy-six million, one hundred thirty-five thousand, nine hundred eighty-one".