2015199943 has 2 divisors, whose sum is σ = 2015199944. Its totient is φ = 2015199942.

The previous prime is 2015199889. The next prime is 2015199971. The reversal of 2015199943 is 3499915102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2015199943 - 2¹³ = 2015191751 is a prime.

It is a super-2 number, since 2×2015199943² = 8122061620534406498, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2015199943.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2015199743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1007599971 + 1007599972.

It is an arithmetic number, because the mean of its divisors is an integer number (1007599972).

Almost surely, 2^2015199943 is an apocalyptic number.

2015199943 is a deficient number, since it is larger than the sum of its proper divisors (1).

2015199943 is an equidigital number, since it uses as much as digits as its factorization.

2015199943 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 87480, while the sum is 43.

The square root of 2015199943 is about 44890.9784143763. The cubic root of 2015199943 is about 1263.1047860541.

The spelling of 2015199943 in words is "two billion, fifteen million, one hundred ninety-nine thousand, nine hundred forty-three".