981490206 has 32 divisors (see below), whose sum is σ = 2083058208. Its totient is φ = 307235840.

The previous prime is 981490177. The next prime is 981490207. The reversal of 981490206 is 602094189.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (981490207) 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 15 ways as a sum of consecutive naturals, for example, 36586 + ... + 57458.

It is an arithmetic number, because the mean of its divisors is an integer number (65095569).

Almost surely, 2^981490206 is an apocalyptic number.

981490206 is an abundant number, since it is smaller than the sum of its proper divisors (1101568002).

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

981490206 is a wasteful number, since it uses less digits than its factorization.

981490206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21356.

The product of its (nonzero) digits is 31104, while the sum is 39.

The square root of 981490206 is about 31328.7440859030. The cubic root of 981490206 is about 993.7916042548.

The spelling of 981490206 in words is "nine hundred eighty-one million, four hundred ninety thousand, two hundred six".