3981451858 has 8 divisors (see below), whose sum is σ = 5995972080. Its totient is φ = 1982794500.

The previous prime is 3981451853. The next prime is 3981451871. The reversal of 3981451858 is 8581541893.

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

It is not an unprimeable number, because it can be changed into a prime (3981451853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3965088 + ... + 3966091.

It is an arithmetic number, because the mean of its divisors is an integer number (749496510).

Almost surely, 2^3981451858 is an apocalyptic number.

3981451858 is a deficient number, since it is larger than the sum of its proper divisors (2014520222).

3981451858 is a wasteful number, since it uses less digits than its factorization.

3981451858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7931432.

The product of its digits is 1382400, while the sum is 52.

The square root of 3981451858 is about 63098.7468813763. The cubic root of 3981451858 is about 1584.9436379962.

The spelling of 3981451858 in words is "three billion, nine hundred eighty-one million, four hundred fifty-one thousand, eight hundred fifty-eight".