374657891 has 2 divisors, whose sum is σ = 374657892. Its totient is φ = 374657890.

The previous prime is 374657887. The next prime is 374657929. The reversal of 374657891 is 198756473.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 374657891 - 2² = 374657887 is a prime.

It is not a weakly prime, because it can be changed into another prime (374657831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 187328945 + 187328946.

It is an arithmetic number, because the mean of its divisors is an integer number (187328946).

Almost surely, 2^374657891 is an apocalyptic number.

374657891 is a deficient number, since it is larger than the sum of its proper divisors (1).

374657891 is an equidigital number, since it uses as much as digits as its factorization.

374657891 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1270080, while the sum is 50.

The square root of 374657891 is about 19356.0814991051. The cubic root of 374657891 is about 720.9054266303.

The spelling of 374657891 in words is "three hundred seventy-four million, six hundred fifty-seven thousand, eight hundred ninety-one".