190909092 has 24 divisors (see below), whose sum is σ = 485950752. Its totient is φ = 57851200.

The previous prime is 190909091. The next prime is 190909097. The reversal of 190909092 is 290909091.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 190909092.

It is not an unprimeable number, because it can be changed into a prime (190909091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 723009 + ... + 723272.

It is an arithmetic number, because the mean of its divisors is an integer number (20247948).

Almost surely, 2^190909092 is an apocalyptic number.

190909092 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

190909092 is an abundant number, since it is smaller than the sum of its proper divisors (295041660).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

190909092 is a wasteful number, since it uses less digits than its factorization.

190909092 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1446299 (or 1446297 counting only the distinct ones).

The product of its (nonzero) digits is 13122, while the sum is 39.

The square root of 190909092 is about 13816.9856336323. The cubic root of 190909092 is about 575.8051400086.

Subtracting 190909092 from its reverse (290909091), we obtain a palindrome (99999999).

It can be divided in two parts, 19090 and 9092, that added together give a palindrome (28182).

The spelling of 190909092 in words is "one hundred ninety million, nine hundred nine thousand, ninety-two".