202161132 has 18 divisors (see below), whose sum is σ = 511018508. Its totient is φ = 67387032.

The previous prime is 202161109. The next prime is 202161139. The reversal of 202161132 is 231161202.

202161132 is a `hidden beast` number, since 2 + 0 + 21 + 611 + 32 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (202161139) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2807758 + ... + 2807829.

Almost surely, 2^202161132 is an apocalyptic number.

It is an amenable number.

202161132 is an abundant number, since it is smaller than the sum of its proper divisors (308857376).

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

202161132 is a wasteful number, since it uses less digits than its factorization.

202161132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5615597 (or 5615592 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 202161132 is about 14218.3378775439. The cubic root of 202161132 is about 586.9024019637.

The spelling of 202161132 in words is "two hundred two million, one hundred sixty-one thousand, one hundred thirty-two".