19550164 has 12 divisors (see below), whose sum is σ = 36013600. Its totient is φ = 9260568.

The previous prime is 19550159. The next prime is 19550177. The reversal of 19550164 is 46105591.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 128544 + ... + 128695.

Almost surely, 2^19550164 is an apocalyptic number.

It is an amenable number.

19550164 is a deficient number, since it is larger than the sum of its proper divisors (16463436).

19550164 is a wasteful number, since it uses less digits than its factorization.

19550164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257262 (or 257260 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 31.

The square root of 19550164 is about 4421.5567394301. The cubic root of 19550164 is about 269.3912393603.

The spelling of 19550164 in words is "nineteen million, five hundred fifty thousand, one hundred sixty-four".