1791653005 has 4 divisors (see below), whose sum is σ = 2149983612. Its totient is φ = 1433322400.

The previous prime is 1791652999. The next prime is 1791653009. The reversal of 1791653005 is 5003561971.

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 955922724 + 835730281 = 30918^2 + 28909^2 .

It is not a de Polignac number, because 1791653005 - 2³ = 1791652997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1791653009) 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, 179165296 + ... + 179165305.

It is an arithmetic number, because the mean of its divisors is an integer number (537495903).

Almost surely, 2^1791653005 is an apocalyptic number.

It is an amenable number.

1791653005 is a deficient number, since it is larger than the sum of its proper divisors (358330607).

1791653005 is an equidigital number, since it uses as much as digits as its factorization.

1791653005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 358330606.

The product of its (nonzero) digits is 28350, while the sum is 37.

The square root of 1791653005 is about 42327.9222854134. The cubic root of 1791653005 is about 1214.5571847914.

The spelling of 1791653005 in words is "one billion, seven hundred ninety-one million, six hundred fifty-three thousand, five".