7408781898 has 16 divisors (see below), whose sum is σ = 16934358720. Its totient is φ = 2116794816.

The previous prime is 7408781893. The next prime is 7408781909. The reversal of 7408781898 is 8981878047.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (7408781893) 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, 88199743 + ... + 88199826.

It is an arithmetic number, because the mean of its divisors is an integer number (1058397420).

Almost surely, 2^7408781898 is an apocalyptic number.

7408781898 is an abundant number, since it is smaller than the sum of its proper divisors (9525576822).

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

7408781898 is a wasteful number, since it uses less digits than its factorization.

7408781898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176399581.

The product of its (nonzero) digits is 7225344, while the sum is 60.

The square root of 7408781898 is about 86074.2812807635. The cubic root of 7408781898 is about 1949.4657223980.

The spelling of 7408781898 in words is "seven billion, four hundred eight million, seven hundred eighty-one thousand, eight hundred ninety-eight".