1375139000 has 64 divisors (see below), whose sum is σ = 3254191200. Its totient is φ = 543840000.

The previous prime is 1375138981. The next prime is 1375139063. The reversal of 1375139000 is 9315731.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 81275 + ... + 96725.

Almost surely, 2^1375139000 is an apocalyptic number.

1375139000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1375139000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1627095600).

1375139000 is an abundant number, since it is smaller than the sum of its proper divisors (1879052200).

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

1375139000 is a wasteful number, since it uses less digits than its factorization.

1375139000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15561 (or 15547 counting only the distinct ones).

The product of its (nonzero) digits is 2835, while the sum is 29.

The square root of 1375139000 is about 37082.8666637303. The cubic root of 1375139000 is about 1112.0275147169.

The spelling of 1375139000 in words is "one billion, three hundred seventy-five million, one hundred thirty-nine thousand".