849347481601 has 4 divisors (see below), whose sum is σ = 849349324804. Its totient is φ = 849345638400.

The previous prime is 849347481557. The next prime is 849347481623. The reversal of 849347481601 is 106184743948.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 782163360000 + 67184121601 = 884400^2 + 259199^2 .

It is a cyclic number.

It is not a de Polignac number, because 849347481601 - 2¹³ = 849347473409 is a prime.

It is a super-2 number, since 2×849347481601² (a number of 25 digits) contains 22 as substring.

It is the 921601-st Hogben number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (849347401601) by changing a digit.

It is a nontrivial repunit in base 921600.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 459361 + ... + 1381921.

It is an arithmetic number, because the mean of its divisors is an integer number (212337331201).

It is a 460800-hyperperfect number.

Almost surely, 2^849347481601 is an apocalyptic number.

It is an amenable number.

849347481601 is a deficient number, since it is larger than the sum of its proper divisors (1843203).

849347481601 is an equidigital number, since it uses as much as digits as its factorization.

849347481601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1843202.

The product of its (nonzero) digits is 4644864, while the sum is 55.

The spelling of 849347481601 in words is "eight hundred forty-nine billion, three hundred forty-seven million, four hundred eighty-one thousand, six hundred one".