164987026 has 4 divisors (see below), whose sum is σ = 247480542. Its totient is φ = 82493512.

The previous prime is 164986999. The next prime is 164987041. The reversal of 164987026 is 620789461.

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

It can be written as a sum of positive squares in only one way, i.e., 92140801 + 72846225 = 9599^2 + 8535^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41246755 + ... + 41246758.

Almost surely, 2^164987026 is an apocalyptic number.

164987026 is a deficient number, since it is larger than the sum of its proper divisors (82493516).

164987026 is an equidigital number, since it uses as much as digits as its factorization.

164987026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82493515.

The product of its (nonzero) digits is 145152, while the sum is 43.

The square root of 164987026 is about 12844.7275564723. The cubic root of 164987026 is about 548.4662791331.

The spelling of 164987026 in words is "one hundred sixty-four million, nine hundred eighty-seven thousand, twenty-six".