Search a number
-
+
108147000391 = 195691947389
BaseRepresentation
bin110010010111000010…
…0000100010001000111
3101100010221122211202221
41210232010010101013
53232441113003031
6121403153313211
710545661223143
oct1445604042107
9340127584687
10108147000391
1141957187081
1218b62265807
13a276641331
14533d072223
152c2e5c0a11
hex192e104447

108147000391 has 4 divisors (see below), whose sum is σ = 113838947800. Its totient is φ = 102455052984.

The previous prime is 108147000389. The next prime is 108147000421. The reversal of 108147000391 is 193000741801.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 108147000391 - 21 = 108147000389 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 (108147006391) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2845973676 + ... + 2845973713.

It is an arithmetic number, because the mean of its divisors is an integer number (28459736950).

Almost surely, 2108147000391 is an apocalyptic number.

108147000391 is the 207988-th centered pentagonal number.

108147000391 is a deficient number, since it is larger than the sum of its proper divisors (5691947409).

108147000391 is an equidigital number, since it uses as much as digits as its factorization.

108147000391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5691947408.

The product of its (nonzero) digits is 6048, while the sum is 34.

The spelling of 108147000391 in words is "one hundred eight billion, one hundred forty-seven million, three hundred ninety-one", and thus it is an aban number.

Divisors: 1 19 5691947389 108147000391