2261651924 has 12 divisors (see below), whose sum is σ = 4523303904. Its totient is φ = 969279384.

The previous prime is 2261651911. The next prime is 2261651927. The reversal of 2261651924 is 4291561622.

It is a happy number.

2261651924 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2261651927) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40386614 + ... + 40386669.

It is an arithmetic number, because the mean of its divisors is an integer number (376941992).

Almost surely, 2^2261651924 is an apocalyptic number.

It is an amenable number.

2261651924 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2261651924 is a wasteful number, since it uses less digits than its factorization.

2261651924 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80773294 (or 80773292 counting only the distinct ones).

The product of its digits is 51840, while the sum is 38.

The square root of 2261651924 is about 47556.8283635484. The cubic root of 2261651924 is about 1312.6287799142.

The spelling of 2261651924 in words is "two billion, two hundred sixty-one million, six hundred fifty-one thousand, nine hundred twenty-four".