1375139390 has 24 divisors (see below), whose sum is σ = 2498808312. Its totient is φ = 544869680.

The previous prime is 1375139377. The next prime is 1375139399. The reversal of 1375139390 is 939315731.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1375139399) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 108485 + ... + 120495.

It is an arithmetic number, because the mean of its divisors is an integer number (104117013).

Almost surely, 2^1375139390 is an apocalyptic number.

1375139390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1375139390 is a deficient number, since it is larger than the sum of its proper divisors (1123668922).

1375139390 is a wasteful number, since it uses less digits than its factorization.

1375139390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12232 (or 12125 counting only the distinct ones).

The product of its (nonzero) digits is 76545, while the sum is 41.

The square root of 1375139390 is about 37082.8719222231. The cubic root of 1375139390 is about 1112.0276198434.

The spelling of 1375139390 in words is "one billion, three hundred seventy-five million, one hundred thirty-nine thousand, three hundred ninety".