7185989090 has 16 divisors (see below), whose sum is σ = 14782606272. Its totient is φ = 2463767664.

The previous prime is 7185989089. The next prime is 7185989093. The reversal of 7185989090 is 909895817.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (7185989093) 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, 51328424 + ... + 51328563.

It is an arithmetic number, because the mean of its divisors is an integer number (923912892).

Almost surely, 2^7185989090 is an apocalyptic number.

7185989090 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

7185989090 is an abundant number, since it is smaller than the sum of its proper divisors (7596617182).

7185989090 is a wasteful number, since it uses less digits than its factorization.

7185989090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102657001.

The product of its (nonzero) digits is 1632960, while the sum is 56.

The square root of 7185989090 is about 84770.2134596817. The cubic root of 7185989090 is about 1929.7254202340.

The spelling of 7185989090 in words is "seven billion, one hundred eighty-five million, nine hundred eighty-nine thousand, ninety".