2497980787 has 4 divisors (see below), whose sum is σ = 2629453480. Its totient is φ = 2366508096.

The previous prime is 2497980739. The next prime is 2497980817. The reversal of 2497980787 is 7870897942.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2497980787 - 2¹¹ = 2497978739 is a prime.

It is a super-2 number, since 2×2497980787² = 12479816024442278738, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2497980887) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65736318 + ... + 65736355.

It is an arithmetic number, because the mean of its divisors is an integer number (657363370).

Almost surely, 2^2497980787 is an apocalyptic number.

2497980787 is a deficient number, since it is larger than the sum of its proper divisors (131472693).

2497980787 is a wasteful number, since it uses less digits than its factorization.

2497980787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131472692.

The product of its (nonzero) digits is 14224896, while the sum is 61.

The square root of 2497980787 is about 49979.8037911315. The cubic root of 2497980787 is about 1356.8433107215.

The spelling of 2497980787 in words is "two billion, four hundred ninety-seven million, nine hundred eighty thousand, seven hundred eighty-seven".