190681215 has 16 divisors (see below), whose sum is σ = 310262400. Its totient is φ = 99972512.

The previous prime is 190681213. The next prime is 190681219. The reversal of 190681215 is 512186091.

It is a cyclic number.

It is not a de Polignac number, because 190681215 - 2¹ = 190681213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (190681213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 106845 + ... + 108614.

It is an arithmetic number, because the mean of its divisors is an integer number (19391400).

Almost surely, 2^190681215 is an apocalyptic number.

190681215 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

190681215 is a deficient number, since it is larger than the sum of its proper divisors (119581185).

190681215 is a wasteful number, since it uses less digits than its factorization.

190681215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215526.

The product of its (nonzero) digits is 4320, while the sum is 33.

The square root of 190681215 is about 13808.7369082042. The cubic root of 190681215 is about 575.5759471711.

The spelling of 190681215 in words is "one hundred ninety million, six hundred eighty-one thousand, two hundred fifteen".