190043489 has 2 divisors, whose sum is σ = 190043490. Its totient is φ = 190043488.

The previous prime is 190043473. The next prime is 190043509. The reversal of 190043489 is 984340091.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 104203264 + 85840225 = 10208^2 + 9265^2 .

It is a cyclic number.

It is not a de Polignac number, because 190043489 - 2⁴ = 190043473 is a prime.

It is a super-2 number, since 2×190043489² = 72233055422586242, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (190043429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95021744 + 95021745.

It is an arithmetic number, because the mean of its divisors is an integer number (95021745).

Almost surely, 2^190043489 is an apocalyptic number.

It is an amenable number.

190043489 is a deficient number, since it is larger than the sum of its proper divisors (1).

190043489 is an equidigital number, since it uses as much as digits as its factorization.

190043489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 190043489 is about 13785.6261736636. The cubic root of 190043489 is about 574.9335666159.

The spelling of 190043489 in words is "one hundred ninety million, forty-three thousand, four hundred eighty-nine".