2421631493 has 4 divisors (see below), whose sum is σ = 2421811680. Its totient is φ = 2421451308.

The previous prime is 2421631483. The next prime is 2421631501. The reversal of 2421631493 is 3941361242.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2421631493 - 2⁸ = 2421631237 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2421631403) 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, 68153 + ... + 97406.

It is an arithmetic number, because the mean of its divisors is an integer number (605452920).

Almost surely, 2^2421631493 is an apocalyptic number.

It is an amenable number.

2421631493 is a deficient number, since it is larger than the sum of its proper divisors (180187).

2421631493 is a wasteful number, since it uses less digits than its factorization.

2421631493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180186.

The product of its digits is 31104, while the sum is 35.

The square root of 2421631493 is about 49210.0751167888. The cubic root of 2421631493 is about 1342.8763292970.

The spelling of 2421631493 in words is "two billion, four hundred twenty-one million, six hundred thirty-one thousand, four hundred ninety-three".