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164126161 = 198638219
BaseRepresentation
bin10011100100001…
…01110111010001
3102102211110202201
421302011313101
5314004014121
624141443201
74032022633
oct1162056721
9372743681
10164126161
1184710461
1246b70501
1328006894
1417b24a53
15e61ee91
hex9c85dd1

164126161 has 4 divisors (see below), whose sum is σ = 172764400. Its totient is φ = 155487924.

The previous prime is 164126153. The next prime is 164126197. The reversal of 164126161 is 161621461.

164126161 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: 161621461 = 234768863.

It is a cyclic number.

It is not a de Polignac number, because 164126161 - 23 = 164126153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (164126461) 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, 4319091 + ... + 4319128.

It is an arithmetic number, because the mean of its divisors is an integer number (43191100).

Almost surely, 2164126161 is an apocalyptic number.

It is an amenable number.

164126161 is a deficient number, since it is larger than the sum of its proper divisors (8638239).

164126161 is an equidigital number, since it uses as much as digits as its factorization.

164126161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8638238.

The product of its digits is 1728, while the sum is 28.

The square root of 164126161 is about 12811.1732874081. The cubic root of 164126161 is about 547.5106908388.

The spelling of 164126161 in words is "one hundred sixty-four million, one hundred twenty-six thousand, one hundred sixty-one".

Divisors: 1 19 8638219 164126161