981970133 has 8 divisors (see below), whose sum is σ = 1040010840. Its totient is φ = 923960320.

The previous prime is 981970123. The next prime is 981970163. The reversal of 981970133 is 331079189.

It can be written as a sum of positive squares in 4 ways, for example, as 246584209 + 735385924 = 15703^2 + 27118^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 981970133 - 2⁴ = 981970117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (981970123) 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 7 ways as a sum of consecutive naturals, for example, 104093 + ... + 113133.

It is an arithmetic number, because the mean of its divisors is an integer number (130001355).

Almost surely, 2^981970133 is an apocalyptic number.

It is an amenable number.

981970133 is a deficient number, since it is larger than the sum of its proper divisors (58040707).

981970133 is a wasteful number, since it uses less digits than its factorization.

981970133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15447.

The product of its (nonzero) digits is 40824, while the sum is 41.

The square root of 981970133 is about 31336.4026812268. The cubic root of 981970133 is about 993.9535585642.

The spelling of 981970133 in words is "nine hundred eighty-one million, nine hundred seventy thousand, one hundred thirty-three".