1371979986 has 16 divisors (see below), whose sum is σ = 2955033984. Its totient is φ = 422147664.

The previous prime is 1371979967. The next prime is 1371980003. The reversal of 1371979986 is 6899791731.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8794666 + ... + 8794821.

It is an arithmetic number, because the mean of its divisors is an integer number (184689624).

Almost surely, 2^1371979986 is an apocalyptic number.

1371979986 is an abundant number, since it is smaller than the sum of its proper divisors (1583053998).

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

1371979986 is a wasteful number, since it uses less digits than its factorization.

1371979986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17589505.

The product of its digits is 5143824, while the sum is 60.

The square root of 1371979986 is about 37040.2481903132. The cubic root of 1371979986 is about 1111.1753332486.

The spelling of 1371979986 in words is "one billion, three hundred seventy-one million, nine hundred seventy-nine thousand, nine hundred eighty-six".