849718458 has 64 divisors (see below), whose sum is σ = 1918080000. Its totient is φ = 278804592.

The previous prime is 849718453. The next prime is 849718477. The reversal of 849718458 is 854817948.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (849718451) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1149453 + ... + 1150191.

It is an arithmetic number, because the mean of its divisors is an integer number (29970000).

Almost surely, 2^849718458 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 849718458, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (959040000).

849718458 is an abundant number, since it is smaller than the sum of its proper divisors (1068361542).

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

849718458 is a wasteful number, since it uses less digits than its factorization.

849718458 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1056 (or 1050 counting only the distinct ones).

The product of its digits is 2580480, while the sum is 54.

The square root of 849718458 is about 29149.9306688712. The cubic root of 849718458 is about 947.1636390506.

The spelling of 849718458 in words is "eight hundred forty-nine million, seven hundred eighteen thousand, four hundred fifty-eight".