1379375220 has 48 divisors (see below), whose sum is σ = 3916660608. Its totient is φ = 362651520.

The previous prime is 1379375209. The next prime is 1379375237. The reversal of 1379375220 is 225739731.

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, 157639 + ... + 166158.

It is an arithmetic number, because the mean of its divisors is an integer number (81597096).

Almost surely, 2^1379375220 is an apocalyptic number.

1379375220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1379375220 is an abundant number, since it is smaller than the sum of its proper divisors (2537285388).

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

1379375220 is a wasteful number, since it uses less digits than its factorization.

1379375220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323880 (or 323878 counting only the distinct ones).

The product of its (nonzero) digits is 79380, while the sum is 39.

The square root of 1379375220 is about 37139.9410338789. The cubic root of 1379375220 is about 1113.1682391920.

The spelling of 1379375220 in words is "one billion, three hundred seventy-nine million, three hundred seventy-five thousand, two hundred twenty".