1386973601 has 12 divisors (see below), whose sum is σ = 1535143932. Its totient is φ = 1245665088.

The previous prime is 1386973507. The next prime is 1386973607. The reversal of 1386973601 is 1063796831.

It can be written as a sum of positive squares in 6 ways, for example, as 63760225 + 1323213376 = 7985^2 + 36376^2 .

It is not a de Polignac number, because 1386973601 - 2¹⁰ = 1386972577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1386973607) 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, 21170 + ... + 56763.

It is an arithmetic number, because the mean of its divisors is an integer number (127928661).

Almost surely, 2^1386973601 is an apocalyptic number.

It is an amenable number.

1386973601 is a deficient number, since it is larger than the sum of its proper divisors (148170331).

1386973601 is an equidigital number, since it uses as much as digits as its factorization.

1386973601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78020 (or 77983 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 44.

The square root of 1386973601 is about 37242.0944765463. The cubic root of 1386973601 is about 1115.2084848137.

The spelling of 1386973601 in words is "one billion, three hundred eighty-six million, nine hundred seventy-three thousand, six hundred one".