261193132 has 6 divisors (see below), whose sum is σ = 457087988. Its totient is φ = 130596564.

The previous prime is 261193123. The next prime is 261193159. The reversal of 261193132 is 231391162.

It is a self number, because there is not a number n which added to its sum of digits gives 261193132.

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 as a sum of consecutive naturals, namely, 32649138 + ... + 32649145.

Almost surely, 2^261193132 is an apocalyptic number.

It is an amenable number.

261193132 is a deficient number, since it is larger than the sum of its proper divisors (195894856).

261193132 is a wasteful number, since it uses less digits than its factorization.

261193132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65298287 (or 65298285 counting only the distinct ones).

The product of its digits is 1944, while the sum is 28.

The square root of 261193132 is about 16161.4706014026. The cubic root of 261193132 is about 639.2252441337.

The spelling of 261193132 in words is "two hundred sixty-one million, one hundred ninety-three thousand, one hundred thirty-two".