2913397805 has 4 divisors (see below), whose sum is σ = 3496077372. Its totient is φ = 2330718240.

The previous prime is 2913397771. The next prime is 2913397829. The reversal of 2913397805 is 5087933192.

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

It can be written as a sum of positive squares in 2 ways, for example, as 725871364 + 2187526441 = 26942^2 + 46771^2 .

It is not a de Polignac number, because 2913397805 - 2¹⁰ = 2913396781 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 2913397805.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 291339776 + ... + 291339785.

It is an arithmetic number, because the mean of its divisors is an integer number (874019343).

Almost surely, 2^2913397805 is an apocalyptic number.

It is an amenable number.

2913397805 is a deficient number, since it is larger than the sum of its proper divisors (582679567).

2913397805 is an equidigital number, since it uses as much as digits as its factorization.

2913397805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 582679566.

The product of its (nonzero) digits is 408240, while the sum is 47.

The square root of 2913397805 is about 53975.9002240815. The cubic root of 2913397805 is about 1428.2358483739.

The spelling of 2913397805 in words is "two billion, nine hundred thirteen million, three hundred ninety-seven thousand, eight hundred five".