1538913359 has 4 divisors (see below), whose sum is σ = 1538999016. Its totient is φ = 1538827704.

The previous prime is 1538913347. The next prime is 1538913373. The reversal of 1538913359 is 9533198351.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 9533198351 = 53 ⋅179871667.

It is a cyclic number.

It is not a de Polignac number, because 1538913359 - 2¹² = 1538909263 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1538913319) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4364 + ... + 55649.

It is an arithmetic number, because the mean of its divisors is an integer number (384749754).

Almost surely, 2^1538913359 is an apocalyptic number.

1538913359 is a deficient number, since it is larger than the sum of its proper divisors (85657).

1538913359 is an equidigital number, since it uses as much as digits as its factorization.

1538913359 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85656.

The product of its digits is 437400, while the sum is 47.

The square root of 1538913359 is about 39228.9862091796. The cubic root of 1538913359 is about 1154.5286730904.

The spelling of 1538913359 in words is "one billion, five hundred thirty-eight million, nine hundred thirteen thousand, three hundred fifty-nine".