1928551532117 has 16 divisors (see below), whose sum is σ = 2249774217600. Its totient is φ = 1652504291424.

The previous prime is 1928551532093. The next prime is 1928551532153. The reversal of 1928551532117 is 7112351558291.

It is not a de Polignac number, because 1928551532117 - 2¹⁶ = 1928551466581 is a prime.

It is a super-2 number, since 2×1928551532117² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1928551532177) 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, 135353 + ... + 1968609.

It is an arithmetic number, because the mean of its divisors is an integer number (140610888600).

Almost surely, 2^{1928551532117} is an apocalyptic number.

It is an amenable number.

1928551532117 is a deficient number, since it is larger than the sum of its proper divisors (321222685483).

1928551532117 is an equidigital number, since it uses as much as digits as its factorization.

1928551532117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1836345 (or 1836331 counting only the distinct ones).

The product of its digits is 756000, while the sum is 50.

The spelling of 1928551532117 in words is "one trillion, nine hundred twenty-eight billion, five hundred fifty-one million, five hundred thirty-two thousand, one hundred seventeen".