2387494591 has 2 divisors, whose sum is σ = 2387494592. Its totient is φ = 2387494590.

The previous prime is 2387494559. The next prime is 2387494607. The reversal of 2387494591 is 1954947832.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2387494591 - 2⁵ = 2387494559 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2387498591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1193747295 + 1193747296.

It is an arithmetic number, because the mean of its divisors is an integer number (1193747296).

Almost surely, 2^2387494591 is an apocalyptic number.

2387494591 is a deficient number, since it is larger than the sum of its proper divisors (1).

2387494591 is an equidigital number, since it uses as much as digits as its factorization.

2387494591 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2177280, while the sum is 52.

The square root of 2387494591 is about 48861.9953644957. The cubic root of 2387494591 is about 1336.5364236987.

The spelling of 2387494591 in words is "two billion, three hundred eighty-seven million, four hundred ninety-four thousand, five hundred ninety-one".