164961651 has 8 divisors (see below), whose sum is σ = 225893584. Its totient is φ = 107002080.

The previous prime is 164961649. The next prime is 164961653. The reversal of 164961651 is 156169461.

It is an interprime number because it is at equal distance from previous prime (164961649) and next prime (164961653).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 164961651 - 2¹ = 164961649 is a prime.

It is not an unprimeable number, because it can be changed into a prime (164961653) 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, 742960 + ... + 743181.

It is an arithmetic number, because the mean of its divisors is an integer number (28236698).

Almost surely, 2^164961651 is an apocalyptic number.

164961651 is a deficient number, since it is larger than the sum of its proper divisors (60931933).

164961651 is a wasteful number, since it uses less digits than its factorization.

164961651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1486181.

The product of its digits is 38880, while the sum is 39.

The square root of 164961651 is about 12843.7397591200. The cubic root of 164961651 is about 548.4381596586.

The spelling of 164961651 in words is "one hundred sixty-four million, nine hundred sixty-one thousand, six hundred fifty-one".