377690381 has 2 divisors, whose sum is σ = 377690382. Its totient is φ = 377690380.

The previous prime is 377690359. The next prime is 377690407. The reversal of 377690381 is 183096773.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 376554025 + 1136356 = 19405^2 + 1066^2 .

It is a cyclic number.

It is not a de Polignac number, because 377690381 - 2²² = 373496077 is a prime.

It is a super-2 number, since 2×377690381² = 285300047799850322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (377690311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 188845190 + 188845191.

It is an arithmetic number, because the mean of its divisors is an integer number (188845191).

Almost surely, 2^377690381 is an apocalyptic number.

It is an amenable number.

377690381 is a deficient number, since it is larger than the sum of its proper divisors (1).

377690381 is an equidigital number, since it uses as much as digits as its factorization.

377690381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 190512, while the sum is 44.

The square root of 377690381 is about 19434.2579225449. The cubic root of 377690381 is about 722.8452110847.

The spelling of 377690381 in words is "three hundred seventy-seven million, six hundred ninety thousand, three hundred eighty-one".