164626426 has 4 divisors (see below), whose sum is σ = 246939642. Its totient is φ = 82313212.

The previous prime is 164626421. The next prime is 164626447. The reversal of 164626426 is 624626461.

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., 151659225 + 12967201 = 12315^2 + 3601^2 .

It is not an unprimeable number, because it can be changed into a prime (164626421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41156605 + ... + 41156608.

Almost surely, 2^164626426 is an apocalyptic number.

164626426 is a deficient number, since it is larger than the sum of its proper divisors (82313216).

164626426 is an equidigital number, since it uses as much as digits as its factorization.

164626426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82313215.

The product of its digits is 82944, while the sum is 37.

The square root of 164626426 is about 12830.6829903945. The cubic root of 164626426 is about 548.0664068742.

The spelling of 164626426 in words is "one hundred sixty-four million, six hundred twenty-six thousand, four hundred twenty-six".