8121892236 has 24 divisors (see below), whose sum is σ = 19050307584. Its totient is φ = 2693122320.

The previous prime is 8121892231. The next prime is 8121892241. The reversal of 8121892236 is 6322981218.

It is an interprime number because it is at equal distance from previous prime (8121892231) and next prime (8121892241).

It is not an unprimeable number, because it can be changed into a prime (8121892231) 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, 1769500 + ... + 1774083.

It is an arithmetic number, because the mean of its divisors is an integer number (793762816).

Almost surely, 2^8121892236 is an apocalyptic number.

It is an amenable number.

8121892236 is an abundant number, since it is smaller than the sum of its proper divisors (10928415348).

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

8121892236 is a wasteful number, since it uses less digits than its factorization.

8121892236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3543781 (or 3543779 counting only the distinct ones).

The product of its digits is 82944, while the sum is 42.

The square root of 8121892236 is about 90121.5414648462. The cubic root of 8121892236 is about 2010.1065293406.

The spelling of 8121892236 in words is "eight billion, one hundred twenty-one million, eight hundred ninety-two thousand, two hundred thirty-six".