1205117164 has 6 divisors (see below), whose sum is σ = 2108955044. Its totient is φ = 602558580.

The previous prime is 1205117149. The next prime is 1205117167. The reversal of 1205117164 is 4617115021.

It is not an unprimeable number, because it can be changed into a prime (1205117167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 150639642 + ... + 150639649.

Almost surely, 2^1205117164 is an apocalyptic number.

It is an amenable number.

1205117164 is a deficient number, since it is larger than the sum of its proper divisors (903837880).

1205117164 is a wasteful number, since it uses less digits than its factorization.

1205117164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 301279295 (or 301279293 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 28.

The square root of 1205117164 is about 34714.7974788850. The cubic root of 1205117164 is about 1064.1669266717.

The spelling of 1205117164 in words is "one billion, two hundred five million, one hundred seventeen thousand, one hundred sixty-four".