2015229987 has 6 divisors (see below), whose sum is σ = 2910887772. Its totient is φ = 1343486652.

The previous prime is 2015229973. The next prime is 2015230013. The reversal of 2015229987 is 7899225102.

It is a happy number.

It is not a de Polignac number, because 2015229987 - 2²² = 2011035683 is a prime.

It is a super-2 number, since 2×2015229987² = 8122303801008040338, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2015229947) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 111957213 + ... + 111957230.

It is an arithmetic number, because the mean of its divisors is an integer number (485147962).

Almost surely, 2^2015229987 is an apocalyptic number.

2015229987 is a deficient number, since it is larger than the sum of its proper divisors (895657785).

2015229987 is a wasteful number, since it uses less digits than its factorization.

2015229987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223914449 (or 223914446 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 45.

The square root of 2015229987 is about 44891.3130460672. The cubic root of 2015229987 is about 1263.1110631039. Note that the first 3 decimals are identical.

The spelling of 2015229987 in words is "two billion, fifteen million, two hundred twenty-nine thousand, nine hundred eighty-seven".