164159743 has 4 divisors (see below), whose sum is σ = 179083368. Its totient is φ = 149236120.

The previous prime is 164159741. The next prime is 164159747. The reversal of 164159743 is 347951461.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 164159743 - 2¹ = 164159741 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 164159696 and 164159705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164159741) 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, 7461796 + ... + 7461817.

It is an arithmetic number, because the mean of its divisors is an integer number (44770842).

Almost surely, 2^164159743 is an apocalyptic number.

164159743 is a deficient number, since it is larger than the sum of its proper divisors (14923625).

164159743 is a wasteful number, since it uses less digits than its factorization.

164159743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14923624.

The product of its digits is 90720, while the sum is 40.

The square root of 164159743 is about 12812.4838731606. The cubic root of 164159743 is about 547.5480305090.

The spelling of 164159743 in words is "one hundred sixty-four million, one hundred fifty-nine thousand, seven hundred forty-three".