1790168945 has 8 divisors (see below), whose sum is σ = 2169472680. Its totient is φ = 1417955200.

The previous prime is 1790168921. The next prime is 1790168951. The reversal of 1790168945 is 5498610971.

It can be written as a sum of positive squares in 4 ways, for example, as 203262049 + 1586906896 = 14257^2 + 39836^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1790168945 - 2⁸ = 1790168689 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1790168893 and 1790168902.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1771940 + ... + 1772949.

It is an arithmetic number, because the mean of its divisors is an integer number (271184085).

Almost surely, 2^1790168945 is an apocalyptic number.

It is an amenable number.

1790168945 is a deficient number, since it is larger than the sum of its proper divisors (379303735).

1790168945 is a wasteful number, since it uses less digits than its factorization.

1790168945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3544995.

The product of its (nonzero) digits is 544320, while the sum is 50.

The square root of 1790168945 is about 42310.3881452298. The cubic root of 1790168945 is about 1214.2217452774.

The spelling of 1790168945 in words is "one billion, seven hundred ninety million, one hundred sixty-eight thousand, nine hundred forty-five".