1018870198 has 16 divisors (see below), whose sum is σ = 1578483936. Its totient is φ = 492972480.

The previous prime is 1018870187. The next prime is 1018870199. The reversal of 1018870198 is 8910788101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1018870199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58098 + ... + 73573.

It is an arithmetic number, because the mean of its divisors is an integer number (98655246).

Almost surely, 2^1018870198 is an apocalyptic number.

1018870198 is a deficient number, since it is larger than the sum of its proper divisors (559613738).

1018870198 is a wasteful number, since it uses less digits than its factorization.

1018870198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131799.

The product of its (nonzero) digits is 32256, while the sum is 43.

The square root of 1018870198 is about 31919.7462082643. The cubic root of 1018870198 is about 1006.2509106996.

The spelling of 1018870198 in words is "one billion, eighteen million, eight hundred seventy thousand, one hundred ninety-eight".