19093998 has 64 divisors (see below), whose sum is σ = 48941568. Its totient is φ = 4821120.

The previous prime is 19093981. The next prime is 19093999. The reversal of 19093998 is 89939091.

It is a Curzon number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19093999) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16536 + ... + 17652.

It is an arithmetic number, because the mean of its divisors is an integer number (764712).

Almost surely, 2^19093998 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19093998, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24470784).

19093998 is an abundant number, since it is smaller than the sum of its proper divisors (29847570).

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

19093998 is a wasteful number, since it uses less digits than its factorization.

19093998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1177.

The product of its (nonzero) digits is 157464, while the sum is 48.

The square root of 19093998 is about 4369.6679507715. The cubic root of 19093998 is about 267.2794840298.

The spelling of 19093998 in words is "nineteen million, ninety-three thousand, nine hundred ninety-eight".