6428166356 has 12 divisors (see below), whose sum is σ = 11263924980. Its totient is φ = 3209902080.

The previous prime is 6428166337. The next prime is 6428166377. The reversal of 6428166356 is 6536618246.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1723578256 + 4704588100 = 41516^2 + 68590^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 6428166356.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1041815 + ... + 1047966.

It is an arithmetic number, because the mean of its divisors is an integer number (938660415).

Almost surely, 2^6428166356 is an apocalyptic number.

It is an amenable number.

6428166356 is a deficient number, since it is larger than the sum of its proper divisors (4835758624).

6428166356 is a wasteful number, since it uses less digits than its factorization.

6428166356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2090554 (or 2090552 counting only the distinct ones).

The product of its digits is 1244160, while the sum is 47.

The square root of 6428166356 is about 80175.8464626349. The cubic root of 6428166356 is about 1859.3552276262.

The spelling of 6428166356 in words is "six billion, four hundred twenty-eight million, one hundred sixty-six thousand, three hundred fifty-six".