377643139 has 2 divisors, whose sum is σ = 377643140. Its totient is φ = 377643138.

The previous prime is 377643067. The next prime is 377643163. The reversal of 377643139 is 931346773.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 377643139 - 2¹¹ = 377641091 is a prime.

It is a super-2 number, since 2×377643139² = 285228680867546642, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 377643095 and 377643104.

It is not a weakly prime, because it can be changed into another prime (377643439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 188821569 + 188821570.

It is an arithmetic number, because the mean of its divisors is an integer number (188821570).

Almost surely, 2^377643139 is an apocalyptic number.

377643139 is a deficient number, since it is larger than the sum of its proper divisors (1).

377643139 is an equidigital number, since it uses as much as digits as its factorization.

377643139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 285768, while the sum is 43.

The square root of 377643139 is about 19433.0424535120. The cubic root of 377643139 is about 722.8150716910.

The spelling of 377643139 in words is "three hundred seventy-seven million, six hundred forty-three thousand, one hundred thirty-nine".