2390509780 has 12 divisors (see below), whose sum is σ = 5020070580. Its totient is φ = 956203904.

The previous prime is 2390509777. The next prime is 2390509819. The reversal of 2390509780 is 879050932.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1744231696 + 646278084 = 41764^2 + 25422^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59762725 + ... + 59762764.

It is an arithmetic number, because the mean of its divisors is an integer number (418339215).

Almost surely, 2^2390509780 is an apocalyptic number.

2390509780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2390509780 is an abundant number, since it is smaller than the sum of its proper divisors (2629560800).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2390509780 is a wasteful number, since it uses less digits than its factorization.

2390509780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119525498 (or 119525496 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 43.

The square root of 2390509780 is about 48892.8397620756. The cubic root of 2390509780 is about 1337.0988284132.

The spelling of 2390509780 in words is "two billion, three hundred ninety million, five hundred nine thousand, seven hundred eighty".