162491133 has 32 divisors (see below), whose sum is σ = 253209600. Its totient is φ = 90769536.

The previous prime is 162491111. The next prime is 162491141. The reversal of 162491133 is 331194261.

It is not a de Polignac number, because 162491133 - 2⁵ = 162491101 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 162491133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (162491033) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 387598 + ... + 388016.

It is an arithmetic number, because the mean of its divisors is an integer number (7912800).

Almost surely, 2^162491133 is an apocalyptic number.

It is an amenable number.

162491133 is a deficient number, since it is larger than the sum of its proper divisors (90718467).

162491133 is a wasteful number, since it uses less digits than its factorization.

162491133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 801.

The product of its digits is 3888, while the sum is 30.

The square root of 162491133 is about 12747.2009868834. The cubic root of 162491133 is about 545.6865158314.

The spelling of 162491133 in words is "one hundred sixty-two million, four hundred ninety-one thousand, one hundred thirty-three".