8180774550 has 288 divisors, whose sum is σ = 25487654400. Its totient is φ = 1924940160.

The previous prime is 8180774549. The next prime is 8180774557. The reversal of 8180774550 is 554770818.

It is a happy number.

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 8180774496 and 8180774505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8180774557) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 5246671 + ... + 5248229.

It is an arithmetic number, because the mean of its divisors is an integer number (88498800).

Almost surely, 2^8180774550 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8180774550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12743827200).

8180774550 is an abundant number, since it is smaller than the sum of its proper divisors (17306879850).

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

8180774550 is a wasteful number, since it uses less digits than its factorization.

8180774550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1629 (or 1605 counting only the distinct ones).

The product of its (nonzero) digits is 313600, while the sum is 45.

The square root of 8180774550 is about 90447.6342974210. The cubic root of 8180774550 is about 2014.9524789348.

The spelling of 8180774550 in words is "eight billion, one hundred eighty million, seven hundred seventy-four thousand, five hundred fifty".