8015117849 has 4 divisors (see below), whose sum is σ = 8015300736. Its totient is φ = 8014934964.

The previous prime is 8015117821. The next prime is 8015117861. The reversal of 8015117849 is 9487115108.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 8015117849 - 2¹² = 8015113753 is a prime.

It is a super-3 number, since 3×8015117849³ (a number of 31 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8015117749) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17792 + ... + 127854.

It is an arithmetic number, because the mean of its divisors is an integer number (2003825184).

Almost surely, 2^8015117849 is an apocalyptic number.

It is an amenable number.

8015117849 is a deficient number, since it is larger than the sum of its proper divisors (182887).

8015117849 is a wasteful number, since it uses less digits than its factorization.

8015117849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182886.

The product of its (nonzero) digits is 80640, while the sum is 44.

The square root of 8015117849 is about 89527.1905568359. The cubic root of 8015117849 is about 2001.2590280079.

The spelling of 8015117849 in words is "eight billion, fifteen million, one hundred seventeen thousand, eight hundred forty-nine".