628193943 has 48 divisors (see below), whose sum is σ = 1001168896. Its totient is φ = 377213760.

The previous prime is 628193927. The next prime is 628193971. The reversal of 628193943 is 349391826.

It is a happy number.

628193943 is a `hidden beast` number, since 628 + 19 + 3 + 9 + 4 + 3 = 666.

It is not a de Polignac number, because 628193943 - 2⁴ = 628193927 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (628193443) 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 in 47 ways as a sum of consecutive naturals, for example, 995238 + ... + 995868.

Almost surely, 2^628193943 is an apocalyptic number.

628193943 is a deficient number, since it is larger than the sum of its proper divisors (372974953).

628193943 is a wasteful number, since it uses less digits than its factorization.

628193943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 844 (or 841 counting only the distinct ones).

The product of its digits is 279936, while the sum is 45.

The square root of 628193943 is about 25063.7974576879. The cubic root of 628193943 is about 856.4419169648.

The spelling of 628193943 in words is "six hundred twenty-eight million, one hundred ninety-three thousand, nine hundred forty-three".