5981549858 has 8 divisors (see below), whose sum is σ = 9500108652. Its totient is φ = 2814846976.

The previous prime is 5981549857. The next prime is 5981549881. The reversal of 5981549858 is 8589451895.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 5974826209 + 6723649 = 77297^2 + 2593^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 5981549858.

It is not an unprimeable number, because it can be changed into a prime (5981549857) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87963935 + ... + 87964002.

Almost surely, 2^5981549858 is an apocalyptic number.

5981549858 is a deficient number, since it is larger than the sum of its proper divisors (3518558794).

5981549858 is a wasteful number, since it uses less digits than its factorization.

5981549858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175927956.

The product of its digits is 20736000, while the sum is 62.

The square root of 5981549858 is about 77340.4800735036. The cubic root of 5981549858 is about 1815.2561174795.

The spelling of 5981549858 in words is "five billion, nine hundred eighty-one million, five hundred forty-nine thousand, eight hundred fifty-eight".