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18394244382 = 2331107924241
BaseRepresentation
bin10001001000011000…
…011110010100011110
31202110221000102122110
4101020120132110132
5300132411310012
612241124254450
71220553332433
oct211030362436
952427012573
1018394244382
11788a087068
123694241426
131971b08197
14c66d33b8a
15729cd173c
hex44861e51e

18394244382 has 32 divisors (see below), whose sum is σ = 38330164224. Its totient is φ = 5878166400.

The previous prime is 18394244377. The next prime is 18394244383. The reversal of 18394244382 is 28344249381.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18394244383) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 442219 + ... + 482022.

It is an arithmetic number, because the mean of its divisors is an integer number (1197817632).

Almost surely, 218394244382 is an apocalyptic number.

18394244382 is an abundant number, since it is smaller than the sum of its proper divisors (19935919842).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18394244382 is a wasteful number, since it uses less digits than its factorization.

18394244382 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 924384.

The product of its digits is 1327104, while the sum is 48.

The spelling of 18394244382 in words is "eighteen billion, three hundred ninety-four million, two hundred forty-four thousand, three hundred eighty-two".

Divisors: 1 2 3 6 31 62 93 107 186 214 321 642 3317 6634 9951 19902 924241 1848482 2772723 5545446 28651471 57302942 85954413 98893787 171908826 197787574 296681361 593362722 3065707397 6131414794 9197122191 18394244382