19098940 has 24 divisors (see below), whose sum is σ = 45837792. Its totient is φ = 6548160.

The previous prime is 19098931. The next prime is 19098941. The reversal of 19098940 is 4989091.

It is a junction number, because it is equal to n+sod(n) for n = 19098893 and 19098902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19098941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68071 + ... + 68350.

It is an arithmetic number, because the mean of its divisors is an integer number (1909908).

Almost surely, 2^19098940 is an apocalyptic number.

19098940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19098940 is an abundant number, since it is smaller than the sum of its proper divisors (26738852).

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

19098940 is a wasteful number, since it uses less digits than its factorization.

19098940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136437 (or 136435 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 40.

The square root of 19098940 is about 4370.2334033779. The cubic root of 19098940 is about 267.3025415593.

The spelling of 19098940 in words is "nineteen million, ninety-eight thousand, nine hundred forty".