7081789994 has 16 divisors (see below), whose sum is σ = 11250742536. Its totient is φ = 3331660800.

The previous prime is 7081789961. The next prime is 7081790003. The reversal of 7081789994 is 4999871807.

It can be written as a sum of positive squares in 4 ways, for example, as 7080381025 + 1408969 = 84145^2 + 1187^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 100184 + ... + 155564.

Almost surely, 2^7081789994 is an apocalyptic number.

7081789994 is a deficient number, since it is larger than the sum of its proper divisors (4168952542).

7081789994 is a wasteful number, since it uses less digits than its factorization.

7081789994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59161.

The product of its (nonzero) digits is 9144576, while the sum is 62.

The square root of 7081789994 is about 84153.3718516377. The cubic root of 7081789994 is about 1920.3527630544.

The spelling of 7081789994 in words is "seven billion, eighty-one million, seven hundred eighty-nine thousand, nine hundred ninety-four".