1379355913 has 8 divisors (see below), whose sum is σ = 1536683400. Its totient is φ = 1229346048.

The previous prime is 1379355847. The next prime is 1379355937. The reversal of 1379355913 is 3195539731.

It can be written as a sum of positive squares in 4 ways, for example, as 406103104 + 973252809 = 20152^2 + 31197^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1379355913 - 2²¹ = 1377258761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1379355983) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1829008 + ... + 1829761.

It is an arithmetic number, because the mean of its divisors is an integer number (192085425).

Almost surely, 2^1379355913 is an apocalyptic number.

1379355913 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1379355913 is a deficient number, since it is larger than the sum of its proper divisors (157327487).

1379355913 is a wasteful number, since it uses less digits than its factorization.

1379355913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3658811.

The product of its digits is 382725, while the sum is 46.

The square root of 1379355913 is about 37139.6811106396. The cubic root of 1379355913 is about 1113.1630455267.

The spelling of 1379355913 in words is "one billion, three hundred seventy-nine million, three hundred fifty-five thousand, nine hundred thirteen".