190814815 has 16 divisors (see below), whose sum is σ = 241607520. Its totient is φ = 144270720.

The previous prime is 190814807. The next prime is 190814837. The reversal of 190814815 is 518418091.

It is not a de Polignac number, because 190814815 - 2³ = 190814807 is a prime.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 41617 + ... + 45973.

It is an arithmetic number, because the mean of its divisors is an integer number (15100470).

Almost surely, 2^190814815 is an apocalyptic number.

190814815 is a deficient number, since it is larger than the sum of its proper divisors (50792705).

190814815 is a wasteful number, since it uses less digits than its factorization.

190814815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4842.

The product of its (nonzero) digits is 11520, while the sum is 37.

The square root of 190814815 is about 13813.5735781875. The cubic root of 190814815 is about 575.7103407528.

The spelling of 190814815 in words is "one hundred ninety million, eight hundred fourteen thousand, eight hundred fifteen".