190869489 has 48 divisors (see below), whose sum is σ = 300231360. Its totient is φ = 116413440.

The previous prime is 190869467. The next prime is 190869493. The reversal of 190869489 is 984968091.

It is not a de Polignac number, because 190869489 - 2¹⁵ = 190836721 is a prime.

It is a super-2 number, since 2×190869489² = 72862323662242242, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (190869499) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1456954 + ... + 1457084.

It is an arithmetic number, because the mean of its divisors is an integer number (6254820).

Almost surely, 2^190869489 is an apocalyptic number.

It is an amenable number.

190869489 is a deficient number, since it is larger than the sum of its proper divisors (109361871).

190869489 is a wasteful number, since it uses less digits than its factorization.

190869489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 350 (or 347 counting only the distinct ones).

The product of its (nonzero) digits is 1119744, while the sum is 54.

The square root of 190869489 is about 13815.5524319515. The cubic root of 190869489 is about 575.7653214267.

The spelling of 190869489 in words is "one hundred ninety million, eight hundred sixty-nine thousand, four hundred eighty-nine".