1928642533 has 2 divisors, whose sum is σ = 1928642534. Its totient is φ = 1928642532.

The previous prime is 1928642491. The next prime is 1928642539. The reversal of 1928642533 is 3352468291.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1794962689 + 133679844 = 42367^2 + 11562^2 .

It is a cyclic number.

It is not a de Polignac number, because 1928642533 - 2¹⁷ = 1928511461 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1928642533.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1928642539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 964321266 + 964321267.

It is an arithmetic number, because the mean of its divisors is an integer number (964321267).

Almost surely, 2^1928642533 is an apocalyptic number.

It is an amenable number.

1928642533 is a deficient number, since it is larger than the sum of its proper divisors (1).

1928642533 is an equidigital number, since it uses as much as digits as its factorization.

1928642533 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 311040, while the sum is 43.

The square root of 1928642533 is about 43916.3128347542. The cubic root of 1928642533 is about 1244.7550972832.

The spelling of 1928642533 in words is "one billion, nine hundred twenty-eight million, six hundred forty-two thousand, five hundred thirty-three".