63161181 has 8 divisors (see below), whose sum is σ = 93572160. Its totient is φ = 42107436.

The previous prime is 63161143. The next prime is 63161201. The reversal of 63161181 is 18116136.

It is not a de Polignac number, because 63161181 - 2¹⁰ = 63160157 is a prime.

It is a super-2 number, since 2×63161181² = 7978669570629522, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 2339303 = 63161181 / (6 + 3 + 1 + 6 + 1 + 1 + 8 + 1).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63161081) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1169625 + ... + 1169678.

It is an arithmetic number, because the mean of its divisors is an integer number (11696520).

Almost surely, 2^63161181 is an apocalyptic number.

It is an amenable number.

63161181 is a deficient number, since it is larger than the sum of its proper divisors (30410979).

63161181 is a wasteful number, since it uses less digits than its factorization.

63161181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2339312 (or 2339306 counting only the distinct ones).

The product of its digits is 864, while the sum is 27.

The square root of 63161181 is about 7947.4008958904. The cubic root of 63161181 is about 398.2447695980.

The spelling of 63161181 in words is "sixty-three million, one hundred sixty-one thousand, one hundred eighty-one".