1315855839 has 8 divisors (see below), whose sum is σ = 1755325872. Its totient is φ = 876811520.

The previous prime is 1315855799. The next prime is 1315855867. The reversal of 1315855839 is 9385585131.

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 1315855839 - 2⁷ = 1315855711 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1315855939) 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, 99144 + ... + 111629.

It is an arithmetic number, because the mean of its divisors is an integer number (219415734).

Almost surely, 2^1315855839 is an apocalyptic number.

1315855839 is a deficient number, since it is larger than the sum of its proper divisors (439470033).

1315855839 is a wasteful number, since it uses less digits than its factorization.

1315855839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212857.

The product of its digits is 648000, while the sum is 48.

The square root of 1315855839 is about 36274.7272767143. The cubic root of 1315855839 is about 1095.8121311953.

The spelling of 1315855839 in words is "one billion, three hundred fifteen million, eight hundred fifty-five thousand, eight hundred thirty-nine".