185428743 has 4 divisors (see below), whose sum is σ = 247238328. Its totient is φ = 123619160.

The previous prime is 185428717. The next prime is 185428757. The reversal of 185428743 is 347824581.

185428743 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 185428743 - 2⁶ = 185428679 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 185428695 and 185428704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (185428703) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30904788 + ... + 30904793.

It is an arithmetic number, because the mean of its divisors is an integer number (61809582).

Almost surely, 2^185428743 is an apocalyptic number.

185428743 is a deficient number, since it is larger than the sum of its proper divisors (61809585).

185428743 is an equidigital number, since it uses as much as digits as its factorization.

185428743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61809584.

The product of its digits is 215040, while the sum is 42.

The square root of 185428743 is about 13617.2222938454. Note that the first 4 decimals coincide. The cubic root of 185428743 is about 570.2417595571.

The spelling of 185428743 in words is "one hundred eighty-five million, four hundred twenty-eight thousand, seven hundred forty-three".