8161693336 has 32 divisors (see below), whose sum is σ = 16907862240. Its totient is φ = 3673804288.

The previous prime is 8161693327. The next prime is 8161693339. The reversal of 8161693336 is 6333961618.

It is a super-2 number, since 2×8161693336² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8161693339) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1301491 + ... + 1307746.

It is an arithmetic number, because the mean of its divisors is an integer number (528370695).

Almost surely, 2^8161693336 is an apocalyptic number.

It is an amenable number.

8161693336 is an abundant number, since it is smaller than the sum of its proper divisors (8746168904).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8161693336 is a wasteful number, since it uses less digits than its factorization.

8161693336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2609283 (or 2609279 counting only the distinct ones).

The product of its digits is 419904, while the sum is 46.

The square root of 8161693336 is about 90342.0906111874. The cubic root of 8161693336 is about 2013.3846701479.

The spelling of 8161693336 in words is "eight billion, one hundred sixty-one million, six hundred ninety-three thousand, three hundred thirty-six".