2397987451 has 2 divisors, whose sum is σ = 2397987452. Its totient is φ = 2397987450.

The previous prime is 2397987443. The next prime is 2397987463. The reversal of 2397987451 is 1547897932.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2397987451 - 2³ = 2397987443 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2397987392 and 2397987401.

It is not a weakly prime, because it can be changed into another prime (2397987421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1198993725 + 1198993726.

It is an arithmetic number, because the mean of its divisors is an integer number (1198993726).

Almost surely, 2^2397987451 is an apocalyptic number.

2397987451 is a deficient number, since it is larger than the sum of its proper divisors (1).

2397987451 is an equidigital number, since it uses as much as digits as its factorization.

2397987451 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3810240, while the sum is 55.

The square root of 2397987451 is about 48969.2500555195. The cubic root of 2397987451 is about 1338.4915547814.

The spelling of 2397987451 in words is "two billion, three hundred ninety-seven million, nine hundred eighty-seven thousand, four hundred fifty-one".