1628690298969 has 16 divisors (see below), whose sum is σ = 2292430952000. Its totient is φ = 1025699080896.

The previous prime is 1628690298947. The next prime is 1628690299009. The reversal of 1628690298969 is 9698920968261.

It is not a de Polignac number, because 1628690298969 - 2¹⁹ = 1628689774681 is a prime.

It is a super-2 number, since 2×1628690298969² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1628690298969.

It is not an unprimeable number, because it can be changed into a prime (1628690298919) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40916374 + ... + 40956159.

It is an arithmetic number, because the mean of its divisors is an integer number (143276934500).

Almost surely, 2^{1628690298969} is an apocalyptic number.

1628690298969 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

1628690298969 is a deficient number, since it is larger than the sum of its proper divisors (663740653031).

1628690298969 is a wasteful number, since it uses less digits than its factorization.

1628690298969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81872904.

The product of its (nonzero) digits is 362797056, while the sum is 75.

The spelling of 1628690298969 in words is "one trillion, six hundred twenty-eight billion, six hundred ninety million, two hundred ninety-eight thousand, nine hundred sixty-nine".