164075731 has 4 divisors (see below), whose sum is σ = 167566752. Its totient is φ = 160584712.

The previous prime is 164075711. The next prime is 164075753. The reversal of 164075731 is 137570461.

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

It is a de Polignac number, because none of the positive numbers 2^k-164075731 is a prime.

It is a super-2 number, since 2×164075731² = 53841691006368722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (164075701) 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, 1745440 + ... + 1745533.

It is an arithmetic number, because the mean of its divisors is an integer number (41891688).

Almost surely, 2^164075731 is an apocalyptic number.

164075731 is a deficient number, since it is larger than the sum of its proper divisors (3491021).

164075731 is an equidigital number, since it uses as much as digits as its factorization.

164075731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3491020.

The product of its (nonzero) digits is 17640, while the sum is 34.

The square root of 164075731 is about 12809.2049323914. The cubic root of 164075731 is about 547.4546083870.

The spelling of 164075731 in words is "one hundred sixty-four million, seventy-five thousand, seven hundred thirty-one".