1377310356 has 18 divisors (see below), whose sum is σ = 3481534602. Its totient is φ = 459103440.

The previous prime is 1377310349. The next prime is 1377310379. The reversal of 1377310356 is 6530137731.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1326416400 + 50893956 = 36420^2 + 7134^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 38258621 = 1377310356 / (1 + 3 + 7 + 7 + 3 + 1 + 0 + 3 + 5 + 6).

It is a self number, because there is not a number n which added to its sum of digits gives 1377310356.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 19129275 + ... + 19129346.

It is an arithmetic number, because the mean of its divisors is an integer number (193418589).

Almost surely, 2^1377310356 is an apocalyptic number.

It is an amenable number.

1377310356 is an abundant number, since it is smaller than the sum of its proper divisors (2104224246).

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

1377310356 is a wasteful number, since it uses less digits than its factorization.

1377310356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38258631 (or 38258626 counting only the distinct ones).

The product of its (nonzero) digits is 39690, while the sum is 36.

The square root of 1377310356 is about 37112.1321942030. The cubic root of 1377310356 is about 1112.6125071758.

The spelling of 1377310356 in words is "one billion, three hundred seventy-seven million, three hundred ten thousand, three hundred fifty-six".