1838166798 has 64 divisors (see below), whose sum is σ = 4110543360. Its totient is φ = 544102272.

The previous prime is 1838166773. The next prime is 1838166809. The reversal of 1838166798 is 8976618381.

It is a super-4 number, since 4×1838166798⁴ (a number of 38 digits) contains 4444 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 693111 + ... + 695757.

It is an arithmetic number, because the mean of its divisors is an integer number (64227240).

Almost surely, 2^1838166798 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1838166798, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2055271680).

1838166798 is an abundant number, since it is smaller than the sum of its proper divisors (2272376562).

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

1838166798 is a wasteful number, since it uses less digits than its factorization.

1838166798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3001.

The product of its digits is 3483648, while the sum is 57.

The square root of 1838166798 is about 42873.8474830519. The cubic root of 1838166798 is about 1224.9780471979.

The spelling of 1838166798 in words is "one billion, eight hundred thirty-eight million, one hundred sixty-six thousand, seven hundred ninety-eight".