Search a number
-
+
18601093 = 72991631
BaseRepresentation
bin100011011110…
…1010010000101
31022000000220101
41012331102011
514230213333
61502404101
7314051410
oct106752205
938000811
1018601093
11a555305
126290631
133b13784
142682b77
15197667d
hex11bd485

18601093 has 8 divisors (see below), whose sum is σ = 21991680. Its totient is φ = 15393840.

The previous prime is 18601067. The next prime is 18601097. The reversal of 18601093 is 39010681.

It is a happy number.

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

It is not a de Polignac number, because 18601093 - 29 = 18600581 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 (18601097) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45613 + ... + 46018.

It is an arithmetic number, because the mean of its divisors is an integer number (2748960).

Almost surely, 218601093 is an apocalyptic number.

It is an amenable number.

18601093 is a deficient number, since it is larger than the sum of its proper divisors (3390587).

18601093 is an equidigital number, since it uses as much as digits as its factorization.

18601093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91667.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 18601093 is about 4312.8984453613. The cubic root of 18601093 is about 264.9594954113.

The spelling of 18601093 in words is "eighteen million, six hundred one thousand, ninety-three".

Divisors: 1 7 29 203 91631 641417 2657299 18601093