7815000198 has 64 divisors (see below), whose sum is σ = 16855008768. Its totient is φ = 2406750720.

The previous prime is 7815000071. The next prime is 7815000203. The reversal of 7815000198 is 8910005187.

It is a super-2 number, since 2×7815000198² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2123536 + ... + 2127212.

It is an arithmetic number, because the mean of its divisors is an integer number (263359512).

Almost surely, 2^7815000198 is an apocalyptic number.

7815000198 is an abundant number, since it is smaller than the sum of its proper divisors (9040008570).

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

7815000198 is a wasteful number, since it uses less digits than its factorization.

7815000198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4077.

The product of its (nonzero) digits is 20160, while the sum is 39.

The square root of 7815000198 is about 88402.4897726303. The cubic root of 7815000198 is about 1984.4629626209.

The spelling of 7815000198 in words is "seven billion, eight hundred fifteen million, one hundred ninety-eight", and thus it is an aban number.