3985531898 has 8 divisors (see below), whose sum is σ = 5991794208. Its totient is φ = 1988267164.

The previous prime is 3985531883. The next prime is 3985531933. The reversal of 3985531898 is 8981355893.

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

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, 2248286 + ... + 2250057.

It is an arithmetic number, because the mean of its divisors is an integer number (748974276).

Almost surely, 2^3985531898 is an apocalyptic number.

3985531898 is a deficient number, since it is larger than the sum of its proper divisors (2006262310).

3985531898 is a wasteful number, since it uses less digits than its factorization.

3985531898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4498788.

The product of its digits is 9331200, while the sum is 59.

The square root of 3985531898 is about 63131.0691973453. The cubic root of 3985531898 is about 1585.4848497625.

The spelling of 3985531898 in words is "three billion, nine hundred eighty-five million, five hundred thirty-one thousand, eight hundred ninety-eight".