8109913537 has 4 divisors (see below), whose sum is σ = 8847178416. Its totient is φ = 7372648660.

The previous prime is 8109913523. The next prime is 8109913541. The reversal of 8109913537 is 7353199018.

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 a de Polignac number, because none of the positive numbers 2^k-8109913537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8109914537) 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, 368632423 + ... + 368632444.

It is an arithmetic number, because the mean of its divisors is an integer number (2211794604).

Almost surely, 2^8109913537 is an apocalyptic number.

It is an amenable number.

8109913537 is a deficient number, since it is larger than the sum of its proper divisors (737264879).

8109913537 is a wasteful number, since it uses less digits than its factorization.

8109913537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 737264878.

The product of its (nonzero) digits is 204120, while the sum is 46.

The square root of 8109913537 is about 90055.0583643140. The cubic root of 8109913537 is about 2009.1178308297.

The spelling of 8109913537 in words is "eight billion, one hundred nine million, nine hundred thirteen thousand, five hundred thirty-seven".