373777081 has 2 divisors, whose sum is σ = 373777082. Its totient is φ = 373777080.

The previous prime is 373777067. The next prime is 373777087. The reversal of 373777081 is 180777373.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 278890000 + 94887081 = 16700^2 + 9741^2 .

It is a cyclic number.

It is not a de Polignac number, because 373777081 - 2²³ = 365388473 is a prime.

It is a super-2 number, since 2×373777081² = 279418612561761122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (373777087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 186888540 + 186888541.

It is an arithmetic number, because the mean of its divisors is an integer number (186888541).

Almost surely, 2^373777081 is an apocalyptic number.

It is an amenable number.

373777081 is a deficient number, since it is larger than the sum of its proper divisors (1).

373777081 is an equidigital number, since it uses as much as digits as its factorization.

373777081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 172872, while the sum is 43.

The square root of 373777081 is about 19333.3153132100. The cubic root of 373777081 is about 720.3400406411.

The spelling of 373777081 in words is "three hundred seventy-three million, seven hundred seventy-seven thousand, eighty-one".