1012610905 has 8 divisors (see below), whose sum is σ = 1220176584. Its totient is φ = 806726400.

The previous prime is 1012610897. The next prime is 1012610917. The reversal of 1012610905 is 5090162101.

It can be written as a sum of positive squares in 4 ways, for example, as 406909584 + 605701321 = 20172^2 + 24611^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1012610905 - 2³ = 1012610897 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1012610905.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 418966 + ... + 421375.

It is an arithmetic number, because the mean of its divisors is an integer number (152522073).

Almost surely, 2^1012610905 is an apocalyptic number.

It is an amenable number.

1012610905 is a deficient number, since it is larger than the sum of its proper divisors (207565679).

1012610905 is an equidigital number, since it uses as much as digits as its factorization.

1012610905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 840587.

The product of its (nonzero) digits is 540, while the sum is 25.

The square root of 1012610905 is about 31821.5478096211. The cubic root of 1012610905 is about 1004.1860872224.

The spelling of 1012610905 in words is "one billion, twelve million, six hundred ten thousand, nine hundred five".