1790106121 has 4 divisors (see below), whose sum is σ = 1792848132. Its totient is φ = 1787364112.

The previous prime is 1790106107. The next prime is 1790106151. The reversal of 1790106121 is 1216010971.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1148193225 + 641912896 = 33885^2 + 25336^2 .

It is a cyclic number.

It is not a de Polignac number, because 1790106121 - 2²⁵ = 1756551689 is a prime.

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 1790106121.

It is not an unprimeable number, because it can be changed into a prime (1790106151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1370026 + ... + 1371331.

It is an arithmetic number, because the mean of its divisors is an integer number (448212033).

Almost surely, 2^1790106121 is an apocalyptic number.

It is an amenable number.

1790106121 is a deficient number, since it is larger than the sum of its proper divisors (2742011).

1790106121 is an equidigital number, since it uses as much as digits as its factorization.

1790106121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2742010.

The product of its (nonzero) digits is 756, while the sum is 28.

The square root of 1790106121 is about 42309.6457205683. The cubic root of 1790106121 is about 1214.2075411880.

The spelling of 1790106121 in words is "one billion, seven hundred ninety million, one hundred six thousand, one hundred twenty-one".