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189914401 = 316126271
BaseRepresentation
bin10110101000111…
…01110100100001
3111020100122120201
423110131310201
5342104230101
630502305201
74464150205
oct1324356441
9436318521
10189914401
1198224556
1253728201
13304657b1
141b318b05
1511a15e01
hexb51dd21

189914401 has 4 divisors (see below), whose sum is σ = 196040704. Its totient is φ = 183788100.

The previous prime is 189914371. The next prime is 189914437. The reversal of 189914401 is 104419981.

189914401 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 104419981 = 293600689.

It is a cyclic number.

It is not a de Polignac number, because 189914401 - 223 = 181525793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (189914471) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3063105 + ... + 3063166.

It is an arithmetic number, because the mean of its divisors is an integer number (49010176).

Almost surely, 2189914401 is an apocalyptic number.

It is an amenable number.

189914401 is a deficient number, since it is larger than the sum of its proper divisors (6126303).

189914401 is an equidigital number, since it uses as much as digits as its factorization.

189914401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6126302.

The product of its (nonzero) digits is 10368, while the sum is 37.

The square root of 189914401 is about 13780.9434002176. The cubic root of 189914401 is about 574.8033616208.

The spelling of 189914401 in words is "one hundred eighty-nine million, nine hundred fourteen thousand, four hundred one".

Divisors: 1 31 6126271 189914401