457638851 has 2 divisors, whose sum is σ = 457638852. Its totient is φ = 457638850.

The previous prime is 457638791. The next prime is 457638887. The reversal of 457638851 is 158836754.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 457638851 - 2⁶ = 457638787 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 457638796 and 457638805.

It is not a weakly prime, because it can be changed into another prime (457634851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 228819425 + 228819426.

It is an arithmetic number, because the mean of its divisors is an integer number (228819426).

Almost surely, 2^457638851 is an apocalyptic number.

457638851 is a deficient number, since it is larger than the sum of its proper divisors (1).

457638851 is an equidigital number, since it uses as much as digits as its factorization.

457638851 is an evil number, because the sum of its binary digits is even.

The product of its digits is 806400, while the sum is 47.

The square root of 457638851 is about 21392.4952027574. The cubic root of 457638851 is about 770.6212173530.

The spelling of 457638851 in words is "four hundred fifty-seven million, six hundred thirty-eight thousand, eight hundred fifty-one".