Search a number
-
+
381788095 = 51331189473
BaseRepresentation
bin10110110000011…
…001111110111111
3222121101211210211
4112300121332333
51240214204340
6101515013251
712314100553
oct2660317677
9877354724
10381788095
11186567057
12a7a3a227
1361136020
14389c3863
15237b75ea
hex16c19fbf

381788095 has 16 divisors (see below), whose sum is σ = 509306112. Its totient is φ = 272839680.

The previous prime is 381788093. The next prime is 381788107. The reversal of 381788095 is 590887183.

It is not a de Polignac number, because 381788095 - 21 = 381788093 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 (381788093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 92722 + ... + 96751.

It is an arithmetic number, because the mean of its divisors is an integer number (31831632).

Almost surely, 2381788095 is an apocalyptic number.

381788095 is a deficient number, since it is larger than the sum of its proper divisors (127518017).

381788095 is a wasteful number, since it uses less digits than its factorization.

381788095 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189522.

The product of its (nonzero) digits is 483840, while the sum is 49.

The square root of 381788095 is about 19539.3985321964. The cubic root of 381788095 is about 725.4499592873.

The spelling of 381788095 in words is "three hundred eighty-one million, seven hundred eighty-eight thousand, ninety-five".

Divisors: 1 5 13 31 65 155 403 2015 189473 947365 2463149 5873663 12315745 29368315 76357619 381788095