2497889987 has 2 divisors, whose sum is σ = 2497889988. Its totient is φ = 2497889986.

The previous prime is 2497889969. The next prime is 2497890061. The reversal of 2497889987 is 7899887942.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2497889987 - 2²² = 2493695683 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2497889987.

It is not a weakly prime, because it can be changed into another prime (2497889887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1248944993 + 1248944994.

It is an arithmetic number, because the mean of its divisors is an integer number (1248944994).

Almost surely, 2^2497889987 is an apocalyptic number.

2497889987 is a deficient number, since it is larger than the sum of its proper divisors (1).

2497889987 is an equidigital number, since it uses as much as digits as its factorization.

2497889987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 146313216, while the sum is 71.

The square root of 2497889987 is about 49978.8954159653. The cubic root of 2497889987 is about 1356.8268703942.

The spelling of 2497889987 in words is "two billion, four hundred ninety-seven million, eight hundred eighty-nine thousand, nine hundred eighty-seven".