3549981894 has 8 divisors (see below), whose sum is σ = 7099963800. Its totient is φ = 1183327296.

The previous prime is 3549981859. The next prime is 3549981947. The reversal of 3549981894 is 4981899453.

3549981894 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

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

3549981894 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 295831819 + ... + 295831830.

It is an arithmetic number, because the mean of its divisors is an integer number (887495475).

Almost surely, 2^3549981894 is an apocalyptic number.

3549981894 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

3549981894 is a wasteful number, since it uses less digits than its factorization.

3549981894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 591663654.

The product of its digits is 11197440, while the sum is 60.

The square root of 3549981894 is about 59581.7244966945. The cubic root of 3549981894 is about 1525.4877084191.

The spelling of 3549981894 in words is "three billion, five hundred forty-nine million, nine hundred eighty-one thousand, eight hundred ninety-four".