1928690693 has 2 divisors, whose sum is σ = 1928690694. Its totient is φ = 1928690692.

The previous prime is 1928690657. The next prime is 1928690767. The reversal of 1928690693 is 3960968291.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1923524164 + 5166529 = 43858^2 + 2273^2 .

It is a cyclic number.

It is not a de Polignac number, because 1928690693 - 2⁶ = 1928690629 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1928690623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 964345346 + 964345347.

It is an arithmetic number, because the mean of its divisors is an integer number (964345347).

Almost surely, 2^1928690693 is an apocalyptic number.

It is an amenable number.

1928690693 is a deficient number, since it is larger than the sum of its proper divisors (1).

1928690693 is an equidigital number, since it uses as much as digits as its factorization.

1928690693 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1259712, while the sum is 53.

The square root of 1928690693 is about 43916.8611469445. The cubic root of 1928690693 is about 1244.7654580950.

The spelling of 1928690693 in words is "one billion, nine hundred twenty-eight million, six hundred ninety thousand, six hundred ninety-three".