477136381 has 2 divisors, whose sum is σ = 477136382. Its totient is φ = 477136380.

The previous prime is 477136367. The next prime is 477136409. The reversal of 477136381 is 183631774.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 268796025 + 208340356 = 16395^2 + 14434^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-477136381 is a prime.

It is a super-2 number, since 2×477136381² = 455318252147554322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (477136301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 238568190 + 238568191.

It is an arithmetic number, because the mean of its divisors is an integer number (238568191).

Almost surely, 2^477136381 is an apocalyptic number.

It is an amenable number.

477136381 is a deficient number, since it is larger than the sum of its proper divisors (1).

477136381 is an equidigital number, since it uses as much as digits as its factorization.

477136381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 84672, while the sum is 40.

The square root of 477136381 is about 21843.4516732132. The cubic root of 477136381 is about 781.4133813734.

The spelling of 477136381 in words is "four hundred seventy-seven million, one hundred thirty-six thousand, three hundred eighty-one".