981933011 has 4 divisors (see below), whose sum is σ = 1015792800. Its totient is φ = 948073224.

The previous prime is 981932989. The next prime is 981933019. The reversal of 981933011 is 110339189.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 110339189 = 113 ⋅976453.

It is a cyclic number.

It is not a de Polignac number, because 981933011 - 2⁶ = 981932947 is a prime.

It is a super-2 number, since 2×981933011² = 1928384876183052242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (981933019) 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 3 ways as a sum of consecutive naturals, for example, 16929851 + ... + 16929908.

It is an arithmetic number, because the mean of its divisors is an integer number (253948200).

Almost surely, 2^981933011 is an apocalyptic number.

981933011 is a deficient number, since it is larger than the sum of its proper divisors (33859789).

981933011 is a wasteful number, since it uses less digits than its factorization.

981933011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33859788.

The product of its (nonzero) digits is 5832, while the sum is 35.

The square root of 981933011 is about 31335.8103613103. The cubic root of 981933011 is about 993.9410334008.

The spelling of 981933011 in words is "nine hundred eighty-one million, nine hundred thirty-three thousand, eleven".