190001489 has 2 divisors, whose sum is σ = 190001490. Its totient is φ = 190001488.

The previous prime is 190001479. The next prime is 190001507. The reversal of 190001489 is 984100091.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 180015889 + 9985600 = 13417^2 + 3160^2 .

It is a cyclic number.

It is not a de Polignac number, because 190001489 - 2⁴ = 190001473 is a prime.

It is a super-2 number, since 2×190001489² = 72201131644434242, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (190001429) 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 as a sum of consecutive naturals, namely, 95000744 + 95000745.

It is an arithmetic number, because the mean of its divisors is an integer number (95000745).

Almost surely, 2^190001489 is an apocalyptic number.

It is an amenable number.

190001489 is a deficient number, since it is larger than the sum of its proper divisors (1).

190001489 is an equidigital number, since it uses as much as digits as its factorization.

190001489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 32.

The square root of 190001489 is about 13784.1027636912. The cubic root of 190001489 is about 574.8912096638.

The spelling of 190001489 in words is "one hundred ninety million, one thousand, four hundred eighty-nine".