19072989 has 40 divisors (see below), whose sum is σ = 31305120. Its totient is φ = 11500704.

The previous prime is 19072973. The next prime is 19072993. The reversal of 19072989 is 98927091.

It is not a de Polignac number, because 19072989 - 2⁴ = 19072973 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19072909) 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 39 ways as a sum of consecutive naturals, for example, 61974 + ... + 62280.

It is an arithmetic number, because the mean of its divisors is an integer number (782628).

Almost surely, 2^19072989 is an apocalyptic number.

It is an amenable number.

19072989 is a deficient number, since it is larger than the sum of its proper divisors (12232131).

19072989 is a wasteful number, since it uses less digits than its factorization.

19072989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 391 (or 382 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 45.

The square root of 19072989 is about 4367.2633307370. The cubic root of 19072989 is about 267.1814194369.

The spelling of 19072989 in words is "nineteen million, seventy-two thousand, nine hundred eighty-nine".