1315556830 has 32 divisors (see below), whose sum is σ = 2779436736. Its totient is φ = 438856704.

The previous prime is 1315556797. The next prime is 1315556833. The reversal of 1315556830 is 386555131.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a self number, because there is not a number n which added to its sum of digits gives 1315556830.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1315556833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 251379 + ... + 256558.

It is an arithmetic number, because the mean of its divisors is an integer number (86857398).

Almost surely, 2^1315556830 is an apocalyptic number.

1315556830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1315556830 is an abundant number, since it is smaller than the sum of its proper divisors (1463879906).

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

1315556830 is a wasteful number, since it uses less digits than its factorization.

1315556830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 507988.

The product of its (nonzero) digits is 54000, while the sum is 37.

The square root of 1315556830 is about 36270.6055918563. The cubic root of 1315556830 is about 1095.7291224792.

The spelling of 1315556830 in words is "one billion, three hundred fifteen million, five hundred fifty-six thousand, eight hundred thirty".