1391001073 has 12 divisors (see below), whose sum is σ = 1765204272. Its totient is φ = 1083896520.

The previous prime is 1391000981. The next prime is 1391001083. The reversal of 1391001073 is 3701001931.

It is a de Polignac number, because none of the positive numbers 2^k-1391001073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1391001083) 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 11 ways as a sum of consecutive naturals, for example, 1289815 + ... + 1290892.

It is an arithmetic number, because the mean of its divisors is an integer number (147100356).

Almost surely, 2^1391001073 is an apocalyptic number.

It is an amenable number.

1391001073 is a deficient number, since it is larger than the sum of its proper divisors (374203199).

1391001073 is a wasteful number, since it uses less digits than its factorization.

1391001073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2580732 (or 2580725 counting only the distinct ones).

The product of its (nonzero) digits is 567, while the sum is 25.

The square root of 1391001073 is about 37296.1267828175. The cubic root of 1391001073 is about 1116.2868832592.

The spelling of 1391001073 in words is "one billion, three hundred ninety-one million, one thousand, seventy-three".