2513149909 has 2 divisors, whose sum is σ = 2513149910. Its totient is φ = 2513149908.

The previous prime is 2513149907. The next prime is 2513149937. The reversal of 2513149909 is 9099413152.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1820302225 + 692847684 = 42665^2 + 26322^2 .

It is a cyclic number.

It is not a de Polignac number, because 2513149909 - 2¹ = 2513149907 is a prime.

Together with 2513149907, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2513149907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1256574954 + 1256574955.

It is an arithmetic number, because the mean of its divisors is an integer number (1256574955).

Almost surely, 2^2513149909 is an apocalyptic number.

It is an amenable number.

2513149909 is a deficient number, since it is larger than the sum of its proper divisors (1).

2513149909 is an equidigital number, since it uses as much as digits as its factorization.

2513149909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 87480, while the sum is 43.

The square root of 2513149909 is about 50131.3266231804. The cubic root of 2513149909 is about 1359.5842711800.

The spelling of 2513149909 in words is "two billion, five hundred thirteen million, one hundred forty-nine thousand, nine hundred nine".