7998146818 has 8 divisors (see below), whose sum is σ = 12091686912. Its totient is φ = 3967584516.

The previous prime is 7998146813. The next prime is 7998146831. The reversal of 7998146818 is 8186418997.

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

It is not an unprimeable number, because it can be changed into a prime (7998146813) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15744130 + ... + 15744637.

It is an arithmetic number, because the mean of its divisors is an integer number (1511460864).

Almost surely, 2^7998146818 is an apocalyptic number.

7998146818 is a deficient number, since it is larger than the sum of its proper divisors (4093540094).

7998146818 is a wasteful number, since it uses less digits than its factorization.

7998146818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31488896.

The product of its digits is 6967296, while the sum is 61.

The square root of 7998146818 is about 89432.3588976608. The cubic root of 7998146818 is about 1999.8455562405.

The spelling of 7998146818 in words is "seven billion, nine hundred ninety-eight million, one hundred forty-six thousand, eight hundred eighteen".