1315551015 has 12 divisors (see below), whose sum is σ = 2280288504. Its totient is φ = 701627184.

The previous prime is 1315550939. The next prime is 1315551019. The reversal of 1315551015 is 5101555131.

1315551015 is a `hidden beast` number, since 1 + 3 + 1 + 555 + 101 + 5 = 666.

It is not a de Polignac number, because 1315551015 - 2⁸ = 1315550759 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1315551015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1315551019) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14617189 + ... + 14617278.

It is an arithmetic number, because the mean of its divisors is an integer number (190024042).

Almost surely, 2^1315551015 is an apocalyptic number.

1315551015 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1315551015 is a deficient number, since it is larger than the sum of its proper divisors (964737489).

1315551015 is a wasteful number, since it uses less digits than its factorization.

1315551015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29234478 (or 29234475 counting only the distinct ones).

The product of its (nonzero) digits is 1875, while the sum is 27.

The square root of 1315551015 is about 36270.5254304373. The cubic root of 1315551015 is about 1095.7275080363.

The spelling of 1315551015 in words is "one billion, three hundred fifteen million, five hundred fifty-one thousand, fifteen".