1313686078 has 16 divisors (see below), whose sum is σ = 2071910016. Its totient is φ = 623485720.

The previous prime is 1313686063. The next prime is 1313686079. The reversal of 1313686078 is 8706863131.

It is a super-2 number, since 2×1313686078² = 3451542223062044168, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1313686079) 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, 102976 + ... + 115027.

It is an arithmetic number, because the mean of its divisors is an integer number (129494376).

Almost surely, 2^1313686078 is an apocalyptic number.

1313686078 is a deficient number, since it is larger than the sum of its proper divisors (758223938).

1313686078 is a wasteful number, since it uses less digits than its factorization.

1313686078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218159.

The product of its (nonzero) digits is 145152, while the sum is 43.

The square root of 1313686078 is about 36244.8076005378. The cubic root of 1313686078 is about 1095.2094921074.

The spelling of 1313686078 in words is "one billion, three hundred thirteen million, six hundred eighty-six thousand, seventy-eight".