1838395098 has 48 divisors (see below), whose sum is σ = 4105240776. Its totient is φ = 594138240.

The previous prime is 1838395087. The next prime is 1838395109. The reversal of 1838395098 is 8905938381.

It is an interprime number because it is at equal distance from previous prime (1838395087) and next prime (1838395109).

It can be written as a sum of positive squares in 4 ways, for example, as 1837579689 + 815409 = 42867^2 + 903^2 .

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 190428 + ... + 199848.

Almost surely, 2^1838395098 is an apocalyptic number.

1838395098 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1838395098, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2052620388).

1838395098 is an abundant number, since it is smaller than the sum of its proper divisors (2266845678).

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

1838395098 is a wasteful number, since it uses less digits than its factorization.

1838395098 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9759 (or 9756 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 54.

The square root of 1838395098 is about 42876.5098626276. The cubic root of 1838395098 is about 1225.0287591194.

The spelling of 1838395098 in words is "one billion, eight hundred thirty-eight million, three hundred ninety-five thousand, ninety-eight".