2381907464621 has 2 divisors, whose sum is σ = 2381907464622. Its totient is φ = 2381907464620.

The previous prime is 2381907464579. The next prime is 2381907464659. The reversal of 2381907464621 is 1264647091832.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2132096428900 + 249811035721 = 1460170^2 + 499811^2 .

It is a cyclic number.

It is not a de Polignac number, because 2381907464621 - 2⁶ = 2381907464557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2381903464621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1190953732310 + 1190953732311.

It is an arithmetic number, because the mean of its divisors is an integer number (1190953732311).

Almost surely, 2^{2381907464621} is an apocalyptic number.

It is an amenable number.

2381907464621 is a deficient number, since it is larger than the sum of its proper divisors (1).

2381907464621 is an equidigital number, since it uses as much as digits as its factorization.

2381907464621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3483648, while the sum is 53.

The spelling of 2381907464621 in words is "two trillion, three hundred eighty-one billion, nine hundred seven million, four hundred sixty-four thousand, six hundred twenty-one".