2509481436 has 72 divisors (see below), whose sum is σ = 7355644800. Its totient is φ = 651810720.

The previous prime is 2509481431. The next prime is 2509481437. The reversal of 2509481436 is 6341849052.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2509481431) 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 23 ways as a sum of consecutive naturals, for example, 113286 + ... + 133613.

Almost surely, 2^2509481436 is an apocalyptic number.

It is an amenable number.

2509481436 is an abundant number, since it is smaller than the sum of its proper divisors (4846163364).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2509481436 is a wasteful number, since it uses less digits than its factorization.

2509481436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246935 (or 246922 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 42.

The square root of 2509481436 is about 50094.7246324401. The cubic root of 2509481436 is about 1358.9224155860.

The spelling of 2509481436 in words is "two billion, five hundred nine million, four hundred eighty-one thousand, four hundred thirty-six".