1628838354 has 48 divisors (see below), whose sum is σ = 3856216896. Its totient is φ = 455616480.

The previous prime is 1628838319. The next prime is 1628838371. The reversal of 1628838354 is 4538388261.

It is a super-2 number, since 2×1628838354² = 5306228766922858632, which contains 22 as substring.

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 23 ways as a sum of consecutive naturals, for example, 76854 + ... + 95729.

It is an arithmetic number, because the mean of its divisors is an integer number (80337852).

Almost surely, 2^1628838354 is an apocalyptic number.

1628838354 is an abundant number, since it is smaller than the sum of its proper divisors (2227378542).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1628838354 is a wasteful number, since it uses less digits than its factorization.

1628838354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172623 (or 172612 counting only the distinct ones).

The product of its digits is 1105920, while the sum is 48.

The square root of 1628838354 is about 40358.8695827819. The cubic root of 1628838354 is about 1176.5922831566.

The spelling of 1628838354 in words is "one billion, six hundred twenty-eight million, eight hundred thirty-eight thousand, three hundred fifty-four".