1794828121 has 2 divisors, whose sum is σ = 1794828122. Its totient is φ = 1794828120.

The previous prime is 1794828109. The next prime is 1794828131. The reversal of 1794828121 is 1218284971.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1397264400 + 397563721 = 37380^2 + 19939^2 .

It is an emirp because it is prime and its reverse (1218284971) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1794828121 - 2⁵ = 1794828089 is a prime.

It is not a weakly prime, because it can be changed into another prime (1794828131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 897414060 + 897414061.

It is an arithmetic number, because the mean of its divisors is an integer number (897414061).

Almost surely, 2^1794828121 is an apocalyptic number.

It is an amenable number.

1794828121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1794828121 is an equidigital number, since it uses as much as digits as its factorization.

1794828121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 64512, while the sum is 43.

The square root of 1794828121 is about 42365.4118474021. The cubic root of 1794828121 is about 1215.2742291700.

The spelling of 1794828121 in words is "one billion, seven hundred ninety-four million, eight hundred twenty-eight thousand, one hundred twenty-one".