3642488491 has 2 divisors, whose sum is σ = 3642488492. Its totient is φ = 3642488490.

The previous prime is 3642488483. The next prime is 3642488539. The reversal of 3642488491 is 1948842463.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3642488491 - 2³ = 3642488483 is a prime.

It is not a weakly prime, because it can be changed into another prime (3642488411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1821244245 + 1821244246.

It is an arithmetic number, because the mean of its divisors is an integer number (1821244246).

Almost surely, 2^3642488491 is an apocalyptic number.

3642488491 is a deficient number, since it is larger than the sum of its proper divisors (1).

3642488491 is an equidigital number, since it uses as much as digits as its factorization.

3642488491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1327104, while the sum is 49.

The square root of 3642488491 is about 60353.0321607788. The cubic root of 3642488491 is about 1538.6248041301.

The spelling of 3642488491 in words is "three billion, six hundred forty-two million, four hundred eighty-eight thousand, four hundred ninety-one".