19082989 has 2 divisors, whose sum is σ = 19082990. Its totient is φ = 19082988.

The previous prime is 19082983. The next prime is 19083037. The reversal of 19082989 is 98928091.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18966025 + 116964 = 4355^2 + 342^2 .

It is a cyclic number.

It is not a de Polignac number, because 19082989 - 2³ = 19082981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19082981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9541494 + 9541495.

It is an arithmetic number, because the mean of its divisors is an integer number (9541495).

Almost surely, 2^19082989 is an apocalyptic number.

It is an amenable number.

19082989 is a deficient number, since it is larger than the sum of its proper divisors (1).

19082989 is an equidigital number, since it uses as much as digits as its factorization.

19082989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 93312, while the sum is 46.

The square root of 19082989 is about 4368.4080624411. The cubic root of 19082989 is about 267.2281058334.

The spelling of 19082989 in words is "nineteen million, eighty-two thousand, nine hundred eighty-nine".