1375137650 has 24 divisors (see below), whose sum is σ = 2708213940. Its totient is φ = 517698560.

The previous prime is 1375137641. The next prime is 1375137661. The reversal of 1375137650 is 567315731.

It can be written as a sum of positive squares in 6 ways, for example, as 436266769 + 938870881 = 20887^2 + 30641^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 808055 + ... + 809754.

Almost surely, 2^1375137650 is an apocalyptic number.

1375137650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1375137650 is a deficient number, since it is larger than the sum of its proper divisors (1333076290).

1375137650 is a wasteful number, since it uses less digits than its factorization.

1375137650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1617838 (or 1617833 counting only the distinct ones).

The product of its (nonzero) digits is 66150, while the sum is 38.

The square root of 1375137650 is about 37082.8484612496. The cubic root of 1375137650 is about 1112.0271508173.

The spelling of 1375137650 in words is "one billion, three hundred seventy-five million, one hundred thirty-seven thousand, six hundred fifty".