190323481 has 4 divisors (see below), whose sum is σ = 191776464. Its totient is φ = 188870500.

The previous prime is 190323479. The next prime is 190323509. The reversal of 190323481 is 184323091.

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 190323481 - 2¹ = 190323479 is a prime.

It is a super-2 number, since 2×190323481² = 72446054839914722, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (190323451) by changing a digit.

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, 726295 + ... + 726556.

It is an arithmetic number, because the mean of its divisors is an integer number (47944116).

Almost surely, 2^190323481 is an apocalyptic number.

It is an amenable number.

190323481 is a deficient number, since it is larger than the sum of its proper divisors (1452983).

190323481 is a wasteful number, since it uses less digits than its factorization.

190323481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1452982.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 190323481 is about 13795.7776511511. Note that the first 3 decimals coincide. The cubic root of 190323481 is about 575.2157788764.

The spelling of 190323481 in words is "one hundred ninety million, three hundred twenty-three thousand, four hundred eighty-one".