1156406166 has 32 divisors (see below), whose sum is σ = 2595247200. Its totient is φ = 381650400.

The previous prime is 1156406087. The next prime is 1156406183. The reversal of 1156406166 is 6616046511.

It is a happy number.

1156406166 is a `hidden beast` number, since 1 + 1 + 5 + 640 + 6 + 1 + 6 + 6 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 1156406166.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 100561 + ... + 111468.

It is an arithmetic number, because the mean of its divisors is an integer number (81101475).

Almost surely, 2^1156406166 is an apocalyptic number.

1156406166 is an abundant number, since it is smaller than the sum of its proper divisors (1438841034).

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

1156406166 is a wasteful number, since it uses less digits than its factorization.

1156406166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212141 (or 212135 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 1156406166 is about 34005.9725048410. The cubic root of 1156406166 is about 1049.6313644716.

The spelling of 1156406166 in words is "one billion, one hundred fifty-six million, four hundred six thousand, one hundred sixty-six".