1013859391 has 4 divisors (see below), whose sum is σ = 1022831712. Its totient is φ = 1004887072.

The previous prime is 1013859383. The next prime is 1013859421. The reversal of 1013859391 is 1939583101.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1013859391 - 2³ = 1013859383 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1013859331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4485991 + ... + 4486216.

It is an arithmetic number, because the mean of its divisors is an integer number (255707928).

Almost surely, 2^1013859391 is an apocalyptic number.

1013859391 is a deficient number, since it is larger than the sum of its proper divisors (8972321).

1013859391 is an equidigital number, since it uses as much as digits as its factorization.

1013859391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8972320.

The product of its (nonzero) digits is 29160, while the sum is 40.

The square root of 1013859391 is about 31841.1587571809. The cubic root of 1013859391 is about 1004.5986173028.

The spelling of 1013859391 in words is "one billion, thirteen million, eight hundred fifty-nine thousand, three hundred ninety-one".