Search a number
-
+
981852113 = 111971127521
BaseRepresentation
bin111010100001011…
…101111111010001
32112102112020220002
4322201131333101
54002323231423
6241232255345
733221414414
oct7241357721
92472466802
10981852113
11464259030
122349a1555
13128554aa8
1494585b7b
155b2e9228
hex3a85dfd1

981852113 has 32 divisors (see below), whose sum is σ = 1154580480. Its totient is φ = 825552000.

The previous prime is 981852077. The next prime is 981852163. The reversal of 981852113 is 311258189.

It is a cyclic number.

It is not a de Polignac number, because 981852113 - 212 = 981848017 is a prime.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (981852163) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1884293 + ... + 1884813.

It is an arithmetic number, because the mean of its divisors is an integer number (36080640).

Almost surely, 2981852113 is an apocalyptic number.

It is an amenable number.

981852113 is a deficient number, since it is larger than the sum of its proper divisors (172728367).

981852113 is a wasteful number, since it uses less digits than its factorization.

981852113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 749.

The product of its digits is 17280, while the sum is 38.

The square root of 981852113 is about 31334.5195112355. The cubic root of 981852113 is about 993.9137368850.

The spelling of 981852113 in words is "nine hundred eighty-one million, eight hundred fifty-two thousand, one hundred thirteen".

Divisors: 1 11 19 71 127 209 521 781 1349 1397 2413 5731 9017 9899 14839 26543 36991 66167 99187 108889 171323 406901 702829 727837 1257173 1884553 4697857 7731119 13828903 51676427 89259283 981852113