215147019 has 8 divisors (see below), whose sum is σ = 303737040. Its totient is φ = 134994176.

The previous prime is 215147003. The next prime is 215147041. The reversal of 215147019 is 910741512.

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

It is a cyclic number.

It is not a de Polignac number, because 215147019 - 2⁴ = 215147003 is a prime.

It is a super-2 number, since 2×215147019² = 92576479569172722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (215127019) 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 7 ways as a sum of consecutive naturals, for example, 2109234 + ... + 2109335.

It is an arithmetic number, because the mean of its divisors is an integer number (37967130).

Almost surely, 2^215147019 is an apocalyptic number.

215147019 is a deficient number, since it is larger than the sum of its proper divisors (88590021).

215147019 is a wasteful number, since it uses less digits than its factorization.

215147019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4218589.

The product of its (nonzero) digits is 2520, while the sum is 30.

The square root of 215147019 is about 14667.8907481614. The cubic root of 215147019 is about 599.2091608582.

The spelling of 215147019 in words is "two hundred fifteen million, one hundred forty-seven thousand, nineteen".