164203774634 has 8 divisors (see below), whose sum is σ = 246874498500. Its totient is φ = 81912275136.

The previous prime is 164203774531. The next prime is 164203774661. The reversal of 164203774634 is 436477302461.

164203774634 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 147198832225 + 17004942409 = 383665^2 + 130403^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 94805009 + ... + 94806740.

Almost surely, 2^164203774634 is an apocalyptic number.

164203774634 is a deficient number, since it is larger than the sum of its proper divisors (82670723866).

164203774634 is a wasteful number, since it uses less digits than its factorization.

164203774634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189612184.

The product of its (nonzero) digits is 2032128, while the sum is 47.

The spelling of 164203774634 in words is "one hundred sixty-four billion, two hundred three million, seven hundred seventy-four thousand, six hundred thirty-four".