1379609688 has 64 divisors (see below), whose sum is σ = 3491136000. Its totient is φ = 454291200.

The previous prime is 1379609681. The next prime is 1379609701. The reversal of 1379609688 is 8869069731.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1379609681) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 720220 + ... + 722132.

It is an arithmetic number, because the mean of its divisors is an integer number (54549000).

Almost surely, 2^1379609688 is an apocalyptic number.

It is an amenable number.

1379609688 is an abundant number, since it is smaller than the sum of its proper divisors (2111526312).

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

1379609688 is a wasteful number, since it uses less digits than its factorization.

1379609688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2272 (or 2268 counting only the distinct ones).

The product of its (nonzero) digits is 3919104, while the sum is 57.

The square root of 1379609688 is about 37143.0974475743. The cubic root of 1379609688 is about 1113.2313082152.

The spelling of 1379609688 in words is "one billion, three hundred seventy-nine million, six hundred nine thousand, six hundred eighty-eight".