2591658413 has 4 divisors (see below), whose sum is σ = 2594197788. Its totient is φ = 2589119040.

The previous prime is 2591658409. The next prime is 2591658427. The reversal of 2591658413 is 3148561952.

It is a happy number.

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 1468269124 + 1123389289 = 38318^2 + 33517^2 .

It is a cyclic number.

It is not a de Polignac number, because 2591658413 - 2² = 2591658409 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2591658403) 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, 1268156 + ... + 1270197.

It is an arithmetic number, because the mean of its divisors is an integer number (648549447).

Almost surely, 2^2591658413 is an apocalyptic number.

It is an amenable number.

2591658413 is a deficient number, since it is larger than the sum of its proper divisors (2539375).

2591658413 is a wasteful number, since it uses less digits than its factorization.

2591658413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2539374.

The product of its digits is 259200, while the sum is 44.

The square root of 2591658413 is about 50908.3334337317. Note that the first 3 decimals coincide. The cubic root of 2591658413 is about 1373.5967458970.

The spelling of 2591658413 in words is "two billion, five hundred ninety-one million, six hundred fifty-eight thousand, four hundred thirteen".