457378109 has 2 divisors, whose sum is σ = 457378110. Its totient is φ = 457378108.

The previous prime is 457378087. The next prime is 457378133. The reversal of 457378109 is 901873754.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 341880100 + 115498009 = 18490^2 + 10747^2 .

It is a cyclic number.

It is not a de Polignac number, because 457378109 - 2¹² = 457374013 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 457378109.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (457378609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 228689054 + 228689055.

It is an arithmetic number, because the mean of its divisors is an integer number (228689055).

Almost surely, 2^457378109 is an apocalyptic number.

It is an amenable number.

457378109 is a deficient number, since it is larger than the sum of its proper divisors (1).

457378109 is an equidigital number, since it uses as much as digits as its factorization.

457378109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 211680, while the sum is 44.

The square root of 457378109 is about 21386.4000944525. The cubic root of 457378109 is about 770.4748344647.

The spelling of 457378109 in words is "four hundred fifty-seven million, three hundred seventy-eight thousand, one hundred nine".