1376597985 has 16 divisors (see below), whose sum is σ = 2517207936. Its totient is φ = 629301888.

The previous prime is 1376597969. The next prime is 1376598023. The reversal of 1376597985 is 5897956731.

It is not a de Polignac number, because 1376597985 - 2⁴ = 1376597969 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6555124 + ... + 6555333.

It is an arithmetic number, because the mean of its divisors is an integer number (157325496).

Almost surely, 2^1376597985 is an apocalyptic number.

1376597985 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1376597985 is a deficient number, since it is larger than the sum of its proper divisors (1140609951).

1376597985 is a wasteful number, since it uses less digits than its factorization.

1376597985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13110472.

The product of its digits is 14288400, while the sum is 60.

The square root of 1376597985 is about 37102.5334040682. The cubic root of 1376597985 is about 1112.4206526752.

The spelling of 1376597985 in words is "one billion, three hundred seventy-six million, five hundred ninety-seven thousand, nine hundred eighty-five".