164137651 has 4 divisors (see below), whose sum is σ = 169797600. Its totient is φ = 158477704.

The previous prime is 164137643. The next prime is 164137657. The reversal of 164137651 is 156731461.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 156731461 = 149 ⋅1051889.

It is a cyclic number.

It is not a de Polignac number, because 164137651 - 2³ = 164137643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (164137657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2829931 + ... + 2829988.

It is an arithmetic number, because the mean of its divisors is an integer number (42449400).

Almost surely, 2^164137651 is an apocalyptic number.

164137651 is a deficient number, since it is larger than the sum of its proper divisors (5659949).

164137651 is an equidigital number, since it uses as much as digits as its factorization.

164137651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5659948.

The product of its digits is 15120, while the sum is 34.

The square root of 164137651 is about 12811.6217162387. The cubic root of 164137651 is about 547.5234670897.

The spelling of 164137651 in words is "one hundred sixty-four million, one hundred thirty-seven thousand, six hundred fifty-one".