373907881 has 2 divisors, whose sum is σ = 373907882. Its totient is φ = 373907880.

The previous prime is 373907827. The next prime is 373907953. The reversal of 373907881 is 188709373.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 335219481 + 38688400 = 18309^2 + 6220^2 .

It is a cyclic number.

It is not a de Polignac number, because 373907881 - 2²⁵ = 340353449 is a prime.

It is a super-2 number, since 2×373907881² = 279614206947820322, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (373907381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 186953940 + 186953941.

It is an arithmetic number, because the mean of its divisors is an integer number (186953941).

Almost surely, 2^373907881 is an apocalyptic number.

It is an amenable number.

373907881 is a deficient number, since it is larger than the sum of its proper divisors (1).

373907881 is an equidigital number, since it uses as much as digits as its factorization.

373907881 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 254016, while the sum is 46.

The square root of 373907881 is about 19336.6977790935. The cubic root of 373907881 is about 720.4240563942.

The spelling of 373907881 in words is "three hundred seventy-three million, nine hundred seven thousand, eight hundred eighty-one".