Search a number
-
+
19004471197 = 294733194201
BaseRepresentation
bin10001101100110000…
…010011011110011101
31211001110021011110121
4101230300103132131
5302410121034242
612421443434541
71241643224365
oct215460233635
954043234417
1019004471197
11807258a548
123824685a51
131a3b37493a
14cc3dbd9a5
1576366e667
hex46cc1379d

19004471197 has 16 divisors (see below), whose sum is σ = 20088921600. Its totient is φ = 17949052800.

The previous prime is 19004471149. The next prime is 19004471273. The reversal of 19004471197 is 79117440091.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-19004471197 is a prime.

It is a super-2 number, since 2×190044711972 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19004471797) 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, 4521697 + ... + 4525897.

It is an arithmetic number, because the mean of its divisors is an integer number (1255557600).

Almost surely, 219004471197 is an apocalyptic number.

It is an amenable number.

19004471197 is a deficient number, since it is larger than the sum of its proper divisors (1084450403).

19004471197 is a wasteful number, since it uses less digits than its factorization.

19004471197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7596.

The product of its (nonzero) digits is 63504, while the sum is 43.

The spelling of 19004471197 in words is "nineteen billion, four million, four hundred seventy-one thousand, one hundred ninety-seven".

Divisors: 1 29 47 1363 3319 4201 96251 121829 155993 197447 4523797 5725963 13943119 404350451 655326593 19004471197