1377771456 has 56 divisors (see below), whose sum is σ = 3651802704. Its totient is φ = 458444800.

The previous prime is 1377771431. The next prime is 1377771541. The reversal of 1377771456 is 6541777731.

It is a Harshad number since it is a multiple of its sum of digits (48).

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, 107806 + ... + 119906.

Almost surely, 2^1377771456 is an apocalyptic number.

1377771456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1377771456 is an abundant number, since it is smaller than the sum of its proper divisors (2274031248).

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

1377771456 is a wasteful number, since it uses less digits than its factorization.

1377771456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12709 (or 12699 counting only the distinct ones).

The product of its digits is 864360, while the sum is 48.

The square root of 1377771456 is about 37118.3439285753. The cubic root of 1377771456 is about 1112.7366545487.

The spelling of 1377771456 in words is "one billion, three hundred seventy-seven million, seven hundred seventy-one thousand, four hundred fifty-six".