190340863 has 4 divisors (see below), whose sum is σ = 192225528. Its totient is φ = 188456200.

The previous prime is 190340851. The next prime is 190340881. The reversal of 190340863 is 368043091.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 190340863 - 2⁵ = 190340831 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (190343863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 942181 + ... + 942382.

It is an arithmetic number, because the mean of its divisors is an integer number (48056382).

Almost surely, 2^190340863 is an apocalyptic number.

190340863 is a deficient number, since it is larger than the sum of its proper divisors (1884665).

190340863 is a wasteful number, since it uses less digits than its factorization.

190340863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1884664.

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 190340863 is about 13796.4076121286. The cubic root of 190340863 is about 575.2332895837.

The spelling of 190340863 in words is "one hundred ninety million, three hundred forty thousand, eight hundred sixty-three".