8491954450 has 48 divisors (see below), whose sum is σ = 18058844160. Its totient is φ = 2910337920.

The previous prime is 8491954423. The next prime is 8491954469. The reversal of 8491954450 is 544591948.

It is a super-2 number, since 2×8491954450² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 8491954394 and 8491954403.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1540399 + ... + 1545901.

It is an arithmetic number, because the mean of its divisors is an integer number (376225920).

Almost surely, 2^8491954450 is an apocalyptic number.

8491954450 is an abundant number, since it is smaller than the sum of its proper divisors (9566889710).

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

8491954450 is a wasteful number, since it uses less digits than its factorization.

8491954450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9931 (or 9926 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 49.

The square root of 8491954450 is about 92151.8011218446. The cubic root of 8491954450 is about 2040.1834425901.

The spelling of 8491954450 in words is "eight billion, four hundred ninety-one million, nine hundred fifty-four thousand, four hundred fifty".