Search a number
-
+
19031108572 = 2275691194521
BaseRepresentation
bin10001101110010101…
…111010101111011100
31211010022101111002001
4101232111322233130
5302433430433242
612424234412044
71242415516360
oct215625725734
954108344061
1019031108572
118086623603
123831591024
131a43a401b8
14cc77552a0
15765b81eb7
hex46e57abdc

19031108572 has 24 divisors (see below), whose sum is σ = 38129142240. Its totient is φ = 8141848320.

The previous prime is 19031108561. The next prime is 19031108573. The reversal of 19031108572 is 27580113091.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19031108573) 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, 581329 + ... + 613192.

It is an arithmetic number, because the mean of its divisors is an integer number (1588714260).

Almost surely, 219031108572 is an apocalyptic number.

It is an amenable number.

19031108572 is an abundant number, since it is smaller than the sum of its proper divisors (19098033668).

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

19031108572 is a wasteful number, since it uses less digits than its factorization.

19031108572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1195101 (or 1195099 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 37.

The spelling of 19031108572 in words is "nineteen billion, thirty-one million, one hundred eight thousand, five hundred seventy-two".

Divisors: 1 2 4 7 14 28 569 1138 2276 3983 7966 15932 1194521 2389042 4778084 8361647 16723294 33446588 679682449 1359364898 2718729796 4757777143 9515554286 19031108572