2421923651 has 4 divisors (see below), whose sum is σ = 2767912752. Its totient is φ = 2075934552.

The previous prime is 2421923641. The next prime is 2421923653. The reversal of 2421923651 is 1563291242.

2421923651 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2421923651 - 2¹⁰ = 2421922627 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2421923653) 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, 172994540 + ... + 172994553.

It is an arithmetic number, because the mean of its divisors is an integer number (691978188).

Almost surely, 2^2421923651 is an apocalyptic number.

2421923651 is a deficient number, since it is larger than the sum of its proper divisors (345989101).

2421923651 is an equidigital number, since it uses as much as digits as its factorization.

2421923651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345989100.

The product of its digits is 25920, while the sum is 35.

The square root of 2421923651 is about 49213.0435047458. The cubic root of 2421923651 is about 1342.9303309466.

The spelling of 2421923651 in words is "two billion, four hundred twenty-one million, nine hundred twenty-three thousand, six hundred fifty-one".