2388616421 has 2 divisors, whose sum is σ = 2388616422. Its totient is φ = 2388616420.

The previous prime is 2388616411. The next prime is 2388616423. The reversal of 2388616421 is 1246168832.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1617165796 + 771450625 = 40214^2 + 27775^2 .

It is a cyclic number.

It is not a de Polignac number, because 2388616421 - 2¹⁴ = 2388600037 is a prime.

Together with 2388616423, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2388616423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1194308210 + 1194308211.

It is an arithmetic number, because the mean of its divisors is an integer number (1194308211).

Almost surely, 2^2388616421 is an apocalyptic number.

It is an amenable number.

2388616421 is a deficient number, since it is larger than the sum of its proper divisors (1).

2388616421 is an equidigital number, since it uses as much as digits as its factorization.

2388616421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 110592, while the sum is 41.

The square root of 2388616421 is about 48873.4735925328. The cubic root of 2388616421 is about 1336.7457270528.

The spelling of 2388616421 in words is "two billion, three hundred eighty-eight million, six hundred sixteen thousand, four hundred twenty-one".