1628969446 has 16 divisors (see below), whose sum is σ = 2769908400. Its totient is φ = 712261728.

The previous prime is 1628969423. The next prime is 1628969471. The reversal of 1628969446 is 6449698261.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1648261 + ... + 1649248.

It is an arithmetic number, because the mean of its divisors is an integer number (173119275).

Almost surely, 2^1628969446 is an apocalyptic number.

1628969446 is a deficient number, since it is larger than the sum of its proper divisors (1140938954).

1628969446 is a wasteful number, since it uses less digits than its factorization.

1628969446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3297543.

The product of its digits is 4478976, while the sum is 55.

The square root of 1628969446 is about 40360.4936292905. The cubic root of 1628969446 is about 1176.6238471026.

The spelling of 1628969446 in words is "one billion, six hundred twenty-eight million, nine hundred sixty-nine thousand, four hundred forty-six".