1933431442 has 4 divisors (see below), whose sum is σ = 2900147166. Its totient is φ = 966715720.

The previous prime is 1933431407. The next prime is 1933431443. The reversal of 1933431442 is 2441343391.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1724657841 + 208773601 = 41529^2 + 14449^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1933431398 and 1933431407.

It is not an unprimeable number, because it can be changed into a prime (1933431443) by changing a digit.

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, 483357859 + ... + 483357862.

Almost surely, 2^1933431442 is an apocalyptic number.

1933431442 is a deficient number, since it is larger than the sum of its proper divisors (966715724).

1933431442 is an equidigital number, since it uses as much as digits as its factorization.

1933431442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 966715723.

The product of its digits is 31104, while the sum is 34.

The square root of 1933431442 is about 43970.8021532471. The cubic root of 1933431442 is about 1245.7845073047.

The spelling of 1933431442 in words is "one billion, nine hundred thirty-three million, four hundred thirty-one thousand, four hundred forty-two".