2345451491 has 2 divisors, whose sum is σ = 2345451492. Its totient is φ = 2345451490.

The previous prime is 2345451487. The next prime is 2345451509. The reversal of 2345451491 is 1941545432.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2345451491 - 2² = 2345451487 is a prime.

It is a super-2 number, since 2×2345451491² = 11002285393268246162, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2345451191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1172725745 + 1172725746.

It is an arithmetic number, because the mean of its divisors is an integer number (1172725746).

Almost surely, 2^2345451491 is an apocalyptic number.

2345451491 is a deficient number, since it is larger than the sum of its proper divisors (1).

2345451491 is an equidigital number, since it uses as much as digits as its factorization.

2345451491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 86400, while the sum is 38.

The square root of 2345451491 is about 48429.8615628829. The cubic root of 2345451491 is about 1328.6445744338.

The spelling of 2345451491 in words is "two billion, three hundred forty-five million, four hundred fifty-one thousand, four hundred ninety-one".