373520491 has 2 divisors, whose sum is σ = 373520492. Its totient is φ = 373520490.

The previous prime is 373520467. The next prime is 373520503. The reversal of 373520491 is 194025373.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 373520491 - 2⁷ = 373520363 is a prime.

It is not a weakly prime, because it can be changed into another prime (373520461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 186760245 + 186760246.

It is an arithmetic number, because the mean of its divisors is an integer number (186760246).

Almost surely, 2^373520491 is an apocalyptic number.

373520491 is a deficient number, since it is larger than the sum of its proper divisors (1).

373520491 is an equidigital number, since it uses as much as digits as its factorization.

373520491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22680, while the sum is 34.

The square root of 373520491 is about 19326.6782194975. The cubic root of 373520491 is about 720.1751702134.

The spelling of 373520491 in words is "three hundred seventy-three million, five hundred twenty thousand, four hundred ninety-one".