1628708242338 has 16 divisors (see below), whose sum is σ = 3619351649760. Its totient is φ = 542902747428.

The previous prime is 1628708242321. The next prime is 1628708242393. The reversal of 1628708242338 is 8332428078261.

1628708242338 is a `hidden beast` number, since 1 + 6 + 287 + 0 + 8 + 24 + 2 + 338 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54), and also a Moran number because the ratio is a prime number: 30161263747 = 1628708242338 / (1 + 6 + 2 + 8 + 7 + 0 + 8 + 2 + 4 + 2 + 3 + 3 + 8).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15080631820 + ... + 15080631927.

It is an arithmetic number, because the mean of its divisors is an integer number (226209478110).

Almost surely, 2^{1628708242338} is an apocalyptic number.

1628708242338 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1628708242338 is an abundant number, since it is smaller than the sum of its proper divisors (1990643407422).

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

1628708242338 is a wasteful number, since it uses less digits than its factorization.

1628708242338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30161263758 (or 30161263752 counting only the distinct ones).

The product of its (nonzero) digits is 6193152, while the sum is 54.

The spelling of 1628708242338 in words is "one trillion, six hundred twenty-eight billion, seven hundred eight million, two hundred forty-two thousand, three hundred thirty-eight".