8154491800 has 144 divisors (see below), whose sum is σ = 23751448560. Its totient is φ = 2580721920.

The previous prime is 8154491789. The next prime is 8154491803. The reversal of 8154491800 is 81944518.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8154491803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 95397 + ... + 159403.

It is an arithmetic number, because the mean of its divisors is an integer number (164940615).

Almost surely, 2^8154491800 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 8154491800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11875724280).

8154491800 is an abundant number, since it is smaller than the sum of its proper divisors (15596956760).

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

8154491800 is a wasteful number, since it uses less digits than its factorization.

8154491800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64050 (or 64034 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 40.

The square root of 8154491800 is about 90302.2247787949. The cubic root of 8154491800 is about 2012.7923204866.

The spelling of 8154491800 in words is "eight billion, one hundred fifty-four million, four hundred ninety-one thousand, eight hundred".