199982015 has 4 divisors (see below), whose sum is σ = 239978424. Its totient is φ = 159985608.

The previous prime is 199981997. The next prime is 199982063. The reversal of 199982015 is 510289991.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 510289991 = 907 ⋅562613.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-199982015 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19998197 + ... + 19998206.

It is an arithmetic number, because the mean of its divisors is an integer number (59994606).

Almost surely, 2^199982015 is an apocalyptic number.

199982015 is a deficient number, since it is larger than the sum of its proper divisors (39996409).

199982015 is an equidigital number, since it uses as much as digits as its factorization.

199982015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39996408.

The product of its (nonzero) digits is 58320, while the sum is 44.

The square root of 199982015 is about 14141.4997436623. The cubic root of 199982015 is about 584.7860176308.

The spelling of 199982015 in words is "one hundred ninety-nine million, nine hundred eighty-two thousand, fifteen".