19085980 has 24 divisors (see below), whose sum is σ = 41014512. Its totient is φ = 7456512.

The previous prime is 19085977. The next prime is 19085981. The reversal of 19085980 is 8958091.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19085981) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10237 + ... + 11956.

It is an arithmetic number, because the mean of its divisors is an integer number (1708938).

Almost surely, 2^19085980 is an apocalyptic number.

19085980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19085980 is an abundant number, since it is smaller than the sum of its proper divisors (21928532).

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

19085980 is a wasteful number, since it uses less digits than its factorization.

19085980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22245 (or 22243 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 40.

The square root of 19085980 is about 4368.7503934192. The cubic root of 19085980 is about 267.2420665659.

The spelling of 19085980 in words is "nineteen million, eighty-five thousand, nine hundred eighty".