981699950 has 48 divisors (see below), whose sum is σ = 2276532864. Its totient is φ = 305983200.

The previous prime is 981699931. The next prime is 981699989. The reversal of 981699950 is 59996189.

It is a Smith number, since the sum of its digits (56) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 123644 + ... + 131343.

It is an arithmetic number, because the mean of its divisors is an integer number (47427768).

Almost surely, 2^981699950 is an apocalyptic number.

981699950 is an abundant number, since it is smaller than the sum of its proper divisors (1294832914).

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

981699950 is a wasteful number, since it uses less digits than its factorization.

981699950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255017 (or 255012 counting only the distinct ones).

The product of its (nonzero) digits is 1574640, while the sum is 56.

The square root of 981699950 is about 31332.0913760955. The cubic root of 981699950 is about 993.8623901471.

The spelling of 981699950 in words is "nine hundred eighty-one million, six hundred ninety-nine thousand, nine hundred fifty".