1375744840 has 16 divisors (see below), whose sum is σ = 3095425980. Its totient is φ = 550297920.

The previous prime is 1375744807. The next prime is 1375744859. The reversal of 1375744840 is 484475731.

It can be written as a sum of positive squares in 2 ways, for example, as 1180472164 + 195272676 = 34358^2 + 13974^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17196771 + ... + 17196850.

Almost surely, 2^1375744840 is an apocalyptic number.

1375744840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1375744840 is an abundant number, since it is smaller than the sum of its proper divisors (1719681140).

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

1375744840 is a wasteful number, since it uses less digits than its factorization.

1375744840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34393632 (or 34393628 counting only the distinct ones).

The product of its (nonzero) digits is 376320, while the sum is 43.

The square root of 1375744840 is about 37091.0344962229. The cubic root of 1375744840 is about 1112.1907980494.

The spelling of 1375744840 in words is "one billion, three hundred seventy-five million, seven hundred forty-four thousand, eight hundred forty".