1205550164 has 24 divisors (see below), whose sum is σ = 2596570368. Its totient is φ = 476920800.

The previous prime is 1205550161. The next prime is 1205550179. The reversal of 1205550164 is 4610555021.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1205550161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1655612 + ... + 1656339.

It is an arithmetic number, because the mean of its divisors is an integer number (108190432).

Almost surely, 2^1205550164 is an apocalyptic number.

1205550164 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1205550164 is an abundant number, since it is smaller than the sum of its proper divisors (1391020204).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1205550164 is a wasteful number, since it uses less digits than its factorization.

1205550164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3311975 (or 3311973 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 29.

The square root of 1205550164 is about 34721.0334523614. The cubic root of 1205550164 is about 1064.2943635487.

The spelling of 1205550164 in words is "one billion, two hundred five million, five hundred fifty thousand, one hundred sixty-four".