2509661396 has 12 divisors (see below), whose sum is σ = 4791171840. Its totient is φ = 1140755160.

The previous prime is 2509661377. The next prime is 2509661423. The reversal of 2509661396 is 6931669052.

It is a hoax number, since the sum of its digits (47) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 2509661396.

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, 28518836 + ... + 28518923.

It is an arithmetic number, because the mean of its divisors is an integer number (399264320).

Almost surely, 2^2509661396 is an apocalyptic number.

It is an amenable number.

2509661396 is a deficient number, since it is larger than the sum of its proper divisors (2281510444).

2509661396 is a wasteful number, since it uses less digits than its factorization.

2509661396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57037774 (or 57037772 counting only the distinct ones).

The product of its (nonzero) digits is 524880, while the sum is 47.

The square root of 2509661396 is about 50096.5207973568. The cubic root of 2509661396 is about 1358.9548985031.

The spelling of 2509661396 in words is "two billion, five hundred nine million, six hundred sixty-one thousand, three hundred ninety-six".