1377690944 has 28 divisors (see below), whose sum is σ = 3124407264. Its totient is φ = 590438784.

The previous prime is 1377690901. The next prime is 1377690947. The reversal of 1377690944 is 4490967731.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (28).

It is a super-2 number, since 2×1377690944² = 3796064674359222272, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1377690892 and 1377690901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1377690947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1537154 + ... + 1538049.

Almost surely, 2^1377690944 is an apocalyptic number.

1377690944 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1377690944 is an abundant number, since it is smaller than the sum of its proper divisors (1746716320).

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

1377690944 is an equidigital number, since it uses as much as digits as its factorization.

1377690944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3075222 (or 3075212 counting only the distinct ones).

The product of its (nonzero) digits is 1143072, while the sum is 50.

The square root of 1377690944 is about 37117.2593815869. The cubic root of 1377690944 is about 1112.7149793528.

The spelling of 1377690944 in words is "one billion, three hundred seventy-seven million, six hundred ninety thousand, nine hundred forty-four".