2421613991 has 2 divisors, whose sum is σ = 2421613992. Its totient is φ = 2421613990.

The previous prime is 2421613967. The next prime is 2421614009. The reversal of 2421613991 is 1993161242.

2421613991 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2421613991 - 2⁶ = 2421613927 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2421615991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1210806995 + 1210806996.

It is an arithmetic number, because the mean of its divisors is an integer number (1210806996).

Almost surely, 2^2421613991 is an apocalyptic number.

2421613991 is a deficient number, since it is larger than the sum of its proper divisors (1).

2421613991 is an equidigital number, since it uses as much as digits as its factorization.

2421613991 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23328, while the sum is 38.

The square root of 2421613991 is about 49209.8972870296. The cubic root of 2421613991 is about 1342.8730941395.

The spelling of 2421613991 in words is "two billion, four hundred twenty-one million, six hundred thirteen thousand, nine hundred ninety-one".