374505991 has 2 divisors, whose sum is σ = 374505992. Its totient is φ = 374505990.

The previous prime is 374505953. The next prime is 374506021. The reversal of 374505991 is 199505473.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 374505991 - 2⁹ = 374505479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (374505091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 187252995 + 187252996.

It is an arithmetic number, because the mean of its divisors is an integer number (187252996).

Almost surely, 2^374505991 is an apocalyptic number.

374505991 is a deficient number, since it is larger than the sum of its proper divisors (1).

374505991 is an equidigital number, since it uses as much as digits as its factorization.

374505991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 170100, while the sum is 43.

The square root of 374505991 is about 19352.1572699273. The cubic root of 374505991 is about 720.8079863259.

The spelling of 374505991 in words is "three hundred seventy-four million, five hundred five thousand, nine hundred ninety-one".