190206331489 has 4 divisors (see below), whose sum is σ = 191162142400. Its totient is φ = 189250520580.

The previous prime is 190206331459. The next prime is 190206331559. The reversal of 190206331489 is 984133602091.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 190206331489 - 2⁷ = 190206331361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (190206331409) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 477905157 + ... + 477905554.

It is an arithmetic number, because the mean of its divisors is an integer number (47790535600).

Almost surely, 2^190206331489 is an apocalyptic number.

It is an amenable number.

190206331489 is a deficient number, since it is larger than the sum of its proper divisors (955810911).

190206331489 is an equidigital number, since it uses as much as digits as its factorization.

190206331489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 955810910.

The product of its (nonzero) digits is 279936, while the sum is 46.

The spelling of 190206331489 in words is "one hundred ninety billion, two hundred six million, three hundred thirty-one thousand, four hundred eighty-nine".