164030261 has 4 divisors (see below), whose sum is σ = 164198112. Its totient is φ = 163862412.

The previous prime is 164030233. The next prime is 164030309. The reversal of 164030261 is 162030461.

It is a happy number.

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.

It is a cyclic number.

It is not a de Polignac number, because 164030261 - 2²² = 159835957 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 (164039261) 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, 82451 + ... + 84416.

It is an arithmetic number, because the mean of its divisors is an integer number (41049528).

Almost surely, 2^164030261 is an apocalyptic number.

It is an amenable number.

164030261 is a deficient number, since it is larger than the sum of its proper divisors (167851).

164030261 is an equidigital number, since it uses as much as digits as its factorization.

164030261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167850.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 164030261 is about 12807.4299139211. The cubic root of 164030261 is about 547.4040320246.

The spelling of 164030261 in words is "one hundred sixty-four million, thirty thousand, two hundred sixty-one".