193291146 has 24 divisors (see below), whose sum is σ = 419184324. Its totient is φ = 64370880.

The previous prime is 193291141. The next prime is 193291157. The reversal of 193291146 is 641192391.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 175271121 + 18020025 = 13239^2 + 4245^2 .

It is a super-2 number, since 2×193291146² = 74722934243986632, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 193291146.

It is not an unprimeable number, because it can be changed into a prime (193291141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17926 + ... + 26606.

Almost surely, 2^193291146 is an apocalyptic number.

193291146 is an abundant number, since it is smaller than the sum of its proper divisors (225893178).

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

193291146 is a wasteful number, since it uses less digits than its factorization.

193291146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9926 (or 9923 counting only the distinct ones).

The product of its digits is 11664, while the sum is 36.

The square root of 193291146 is about 13902.9186144493. The cubic root of 193291146 is about 578.1901032153.

The spelling of 193291146 in words is "one hundred ninety-three million, two hundred ninety-one thousand, one hundred forty-six".