2015199889 has 2 divisors, whose sum is σ = 2015199890. Its totient is φ = 2015199888.

The previous prime is 2015199863. The next prime is 2015199943. The reversal of 2015199889 is 9889915102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1712718225 + 302481664 = 41385^2 + 17392^2 .

It is a cyclic number.

It is not a de Polignac number, because 2015199889 - 2²⁷ = 1880982161 is a prime.

It is a super-2 number, since 2×2015199889² = 8122061185251224642, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2015199829) 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 as a sum of consecutive naturals, namely, 1007599944 + 1007599945.

It is an arithmetic number, because the mean of its divisors is an integer number (1007599945).

Almost surely, 2^2015199889 is an apocalyptic number.

It is an amenable number.

2015199889 is a deficient number, since it is larger than the sum of its proper divisors (1).

2015199889 is an equidigital number, since it uses as much as digits as its factorization.

2015199889 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 466560, while the sum is 52.

The square root of 2015199889 is about 44890.9778129192. The cubic root of 2015199889 is about 1263.1047747719.

The spelling of 2015199889 in words is "two billion, fifteen million, one hundred ninety-nine thousand, eight hundred eighty-nine".