164253634 has 4 divisors (see below), whose sum is σ = 246380454. Its totient is φ = 82126816.

The previous prime is 164253631. The next prime is 164253641. The reversal of 164253634 is 436352461.

164253634 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 436352461 = 19 ⋅22965919.

It can be written as a sum of positive squares in only one way, i.e., 132365025 + 31888609 = 11505^2 + 5647^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 164253634.

It is not an unprimeable number, because it can be changed into a prime (164253631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41063407 + ... + 41063410.

Almost surely, 2^164253634 is an apocalyptic number.

164253634 is a deficient number, since it is larger than the sum of its proper divisors (82126820).

164253634 is an equidigital number, since it uses as much as digits as its factorization.

164253634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82126819.

The product of its digits is 51840, while the sum is 34.

The square root of 164253634 is about 12816.1473930351. The cubic root of 164253634 is about 547.6524004620.

The spelling of 164253634 in words is "one hundred sixty-four million, two hundred fifty-three thousand, six hundred thirty-four".