190323890 has 8 divisors (see below), whose sum is σ = 342583020. Its totient is φ = 76129552.

The previous prime is 190323883. The next prime is 190323907. The reversal of 190323890 is 98323091.

It can be written as a sum of positive squares in 2 ways, for example, as 165353881 + 24970009 = 12859^2 + 4997^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 190323890.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 9516185 + ... + 9516204.

Almost surely, 2^190323890 is an apocalyptic number.

190323890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

190323890 is a deficient number, since it is larger than the sum of its proper divisors (152259130).

190323890 is a wasteful number, since it uses less digits than its factorization.

190323890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19032396.

The product of its (nonzero) digits is 11664, while the sum is 35.

The square root of 190323890 is about 13795.7924745192. The cubic root of 190323890 is about 575.2161909172.

It can be divided in two parts, 19032 and 3890, that added together give a palindrome (22922).

The spelling of 190323890 in words is "one hundred ninety million, three hundred twenty-three thousand, eight hundred ninety".