7899180989 has 8 divisors (see below), whose sum is σ = 9028268160. Its totient is φ = 6770252016.

The previous prime is 7899180983. The next prime is 7899180997. The reversal of 7899180989 is 9890819987.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7899180989 - 2¹² = 7899176893 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7899180983) 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, 100547 + ... + 160959.

It is an arithmetic number, because the mean of its divisors is an integer number (1128533520).

Almost surely, 2^7899180989 is an apocalyptic number.

It is an amenable number.

7899180989 is a deficient number, since it is larger than the sum of its proper divisors (1129087171).

7899180989 is a wasteful number, since it uses less digits than its factorization.

7899180989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79099.

The product of its (nonzero) digits is 23514624, while the sum is 68.

The square root of 7899180989 is about 88877.3367569033. The cubic root of 7899180989 is about 1991.5628732459.

The spelling of 7899180989 in words is "seven billion, eight hundred ninety-nine million, one hundred eighty thousand, nine hundred eighty-nine".