7798540902 has 16 divisors (see below), whose sum is σ = 15604838832. Its totient is φ = 2598220800.

The previous prime is 7798540891. The next prime is 7798540903. The reversal of 7798540902 is 2090458977.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7798540903) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 310099 + ... + 334302.

It is an arithmetic number, because the mean of its divisors is an integer number (975302427).

Almost surely, 2^7798540902 is an apocalyptic number.

7798540902 is an abundant number, since it is smaller than the sum of its proper divisors (7806297930).

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

7798540902 is a wasteful number, since it uses less digits than its factorization.

7798540902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 646423.

The product of its (nonzero) digits is 1270080, while the sum is 51.

The square root of 7798540902 is about 88309.3477611515. The cubic root of 7798540902 is about 1983.0688137646.

The spelling of 7798540902 in words is "seven billion, seven hundred ninety-eight million, five hundred forty thousand, nine hundred two".