2501987646 has 16 divisors (see below), whose sum is σ = 5004572544. Its totient is φ = 833896344.

The previous prime is 2501987623. The next prime is 2501987681. The reversal of 2501987646 is 6467891052.

It is a junction number, because it is equal to n+sod(n) for n = 2501987595 and 2501987604.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44425 + ... + 83531.

It is an arithmetic number, because the mean of its divisors is an integer number (312785784).

Almost surely, 2^2501987646 is an apocalyptic number.

2501987646 is an abundant number, since it is smaller than the sum of its proper divisors (2502584898).

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

2501987646 is a wasteful number, since it uses less digits than its factorization.

2501987646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49775.

The product of its (nonzero) digits is 725760, while the sum is 48.

The square root of 2501987646 is about 50019.8725108331. The cubic root of 2501987646 is about 1357.5683997701.

The spelling of 2501987646 in words is "two billion, five hundred one million, nine hundred eighty-seven thousand, six hundred forty-six".