1377925438 has 4 divisors (see below), whose sum is σ = 2066888160. Its totient is φ = 688962718.

The previous prime is 1377925421. The next prime is 1377925441. The reversal of 1377925438 is 8345297731.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8345297731 = 73 ⋅114319147.

It is a junction number, because it is equal to n+sod(n) for n = 1377925391 and 1377925400.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 344481358 + ... + 344481361.

It is an arithmetic number, because the mean of its divisors is an integer number (516722040).

Almost surely, 2^1377925438 is an apocalyptic number.

1377925438 is a deficient number, since it is larger than the sum of its proper divisors (688962722).

1377925438 is an equidigital number, since it uses as much as digits as its factorization.

1377925438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 688962721.

The product of its digits is 1270080, while the sum is 49.

The square root of 1377925438 is about 37120.4180741543. The cubic root of 1377925438 is about 1112.7781067629.

The spelling of 1377925438 in words is "one billion, three hundred seventy-seven million, nine hundred twenty-five thousand, four hundred thirty-eight".