Search a number
1954130011 = 2313184481
BaseRepresentation
bin111010001111001…
…1010100001011011
312001012001002102121
41310132122201123
513000224130021
6521523442111
766265555021
oct16436324133
95035032377
101954130011
11913067889
12466526337
13251b06a62
14147758711
15b6851741
hex7479a85b

1954130011 has 4 divisors (see below), whose sum is σ = 1954237624. Its totient is φ = 1954022400.

The previous prime is 1954129949. The next prime is 1954130021. The reversal of 1954130011 is 1100314591.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1954130011 - 217 = 1953998939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1954130021) 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, 19110 + ... + 65371.

It is an arithmetic number, because the mean of its divisors is an integer number (488559406).

Almost surely, 21954130011 is an apocalyptic number.

1954130011 is a deficient number, since it is larger than the sum of its proper divisors (107613).

1954130011 is an equidigital number, since it uses as much as digits as its factorization.

1954130011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107612.

The product of its (nonzero) digits is 540, while the sum is 25.

The square root of 1954130011 is about 44205.5427633232. The cubic root of 1954130011 is about 1250.2143655825.

The spelling of 1954130011 in words is "one billion, nine hundred fifty-four million, one hundred thirty thousand, eleven".

Divisors: 1 23131 84481 1954130011