981685950 has 48 divisors (see below), whose sum is σ = 2782381440. Its totient is φ = 224385120.

The previous prime is 981685949. The next prime is 981685951. The reversal of 981685950 is 59586189.

It is an interprime number because it is at equal distance from previous prime (981685949) and next prime (981685951).

It is a junction number, because it is equal to n+sod(n) for n = 981685893 and 981685902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (981685951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 466420 + ... + 468519.

It is an arithmetic number, because the mean of its divisors is an integer number (57966280).

Almost surely, 2^981685950 is an apocalyptic number.

981685950 is an abundant number, since it is smaller than the sum of its proper divisors (1800695490).

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

981685950 is a wasteful number, since it uses less digits than its factorization.

981685950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 934961 (or 934956 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 51.

The square root of 981685950 is about 31331.8679621883. The cubic root of 981685950 is about 993.8576656419.

The spelling of 981685950 in words is "nine hundred eighty-one million, six hundred eighty-five thousand, nine hundred fifty".