1377923456 has 64 divisors (see below), whose sum is σ = 3378590880. Its totient is φ = 545107968.

The previous prime is 1377923441. The next prime is 1377923461. The reversal of 1377923456 is 6543297731.

It is a tau number, because it is divible by the number of its divisors (64).

It is a self number, because there is not a number n which added to its sum of digits gives 1377923456.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47501 + ... + 70796.

Almost surely, 2^1377923456 is an apocalyptic number.

1377923456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1377923456 is an abundant number, since it is smaller than the sum of its proper divisors (2000667424).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1377923456 is a wasteful number, since it uses less digits than its factorization.

1377923456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118331 (or 118319 counting only the distinct ones).

The product of its digits is 952560, while the sum is 47.

The square root of 1377923456 is about 37120.3913772471. The cubic root of 1377923456 is about 1112.7775732248. Note that the first 3 decimals are identical.

The spelling of 1377923456 in words is "one billion, three hundred seventy-seven million, nine hundred twenty-three thousand, four hundred fifty-six".