2009758456 has 8 divisors (see below), whose sum is σ = 3768297120. Its totient is φ = 1004879224.

The previous prime is 2009758403. The next prime is 2009758481. The reversal of 2009758456 is 6548579002.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125609896 + ... + 125609911.

It is an arithmetic number, because the mean of its divisors is an integer number (471037140).

Almost surely, 2^2009758456 is an apocalyptic number.

It is an amenable number.

2009758456 is a deficient number, since it is larger than the sum of its proper divisors (1758538664).

2009758456 is a wasteful number, since it uses less digits than its factorization.

2009758456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251219813 (or 251219809 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 46.

The square root of 2009758456 is about 44830.3296441148. The cubic root of 2009758456 is about 1261.9668735021.

The spelling of 2009758456 in words is "two billion, nine million, seven hundred fifty-eight thousand, four hundred fifty-six".