1838870198 has 32 divisors (see below), whose sum is σ = 3190320000. Its totient is φ = 786136320.

The previous prime is 1838870191. The next prime is 1838870261. The reversal of 1838870198 is 8910788381.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1838870191) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42278 + ... + 73926.

It is an arithmetic number, because the mean of its divisors is an integer number (99697500).

Almost surely, 2^1838870198 is an apocalyptic number.

1838870198 is a deficient number, since it is larger than the sum of its proper divisors (1351449802).

1838870198 is a wasteful number, since it uses less digits than its factorization.

1838870198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31820.

The product of its (nonzero) digits is 774144, while the sum is 53.

The square root of 1838870198 is about 42882.0498344004. The cubic root of 1838870198 is about 1225.1342788803.

The spelling of 1838870198 in words is "one billion, eight hundred thirty-eight million, eight hundred seventy thousand, one hundred ninety-eight".