8136991800 has 288 divisors, whose sum is σ = 31358945280. Its totient is φ = 1852243200.

The previous prime is 8136991799. The next prime is 8136991853. The reversal of 8136991800 is 81996318.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 3413409 + ... + 3415791.

Almost surely, 2^8136991800 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8136991800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15679472640).

8136991800 is an abundant number, since it is smaller than the sum of its proper divisors (23221953480).

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

8136991800 is a wasteful number, since it uses less digits than its factorization.

8136991800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2683 (or 2671 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 45.

The square root of 8136991800 is about 90205.2758989185. The cubic root of 8136991800 is about 2011.3514339166.

The spelling of 8136991800 in words is "eight billion, one hundred thirty-six million, nine hundred ninety-one thousand, eight hundred".