377872381 has 2 divisors, whose sum is σ = 377872382. Its totient is φ = 377872380.

The previous prime is 377872367. The next prime is 377872427. The reversal of 377872381 is 183278773.

It is an a-pointer prime, because the next prime (377872427) can be obtained adding 377872381 to its sum of digits (46).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 365383225 + 12489156 = 19115^2 + 3534^2 .

It is an emirp because it is prime and its reverse (183278773) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 377872381 - 2¹¹ = 377870333 is a prime.

It is a super-2 number, since 2×377872381² = 285575072645218322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (377872301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 188936190 + 188936191.

It is an arithmetic number, because the mean of its divisors is an integer number (188936191).

Almost surely, 2^377872381 is an apocalyptic number.

It is an amenable number.

377872381 is a deficient number, since it is larger than the sum of its proper divisors (1).

377872381 is an equidigital number, since it uses as much as digits as its factorization.

377872381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 395136, while the sum is 46.

The square root of 377872381 is about 19438.9398116255. The cubic root of 377872381 is about 722.9612997375.

The spelling of 377872381 in words is "three hundred seventy-seven million, eight hundred seventy-two thousand, three hundred eighty-one".