215390195 has 8 divisors (see below), whose sum is σ = 258748560. Its totient is φ = 172125280.

The previous prime is 215390191. The next prime is 215390249. The reversal of 215390195 is 591093512.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 215390195 - 2² = 215390191 is a prime.

It is a super-2 number, since 2×215390195² = 92785872204276050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (215390191) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18185 + ... + 27594.

It is an arithmetic number, because the mean of its divisors is an integer number (32343570).

Almost surely, 2^215390195 is an apocalyptic number.

215390195 is a deficient number, since it is larger than the sum of its proper divisors (43358365).

215390195 is an equidigital number, since it uses as much as digits as its factorization.

215390195 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46725.

The product of its (nonzero) digits is 12150, while the sum is 35.

The square root of 215390195 is about 14676.1778062273. The cubic root of 215390195 is about 599.4348335527.

The spelling of 215390195 in words is "two hundred fifteen million, three hundred ninety thousand, one hundred ninety-five".