1791642195 has 48 divisors (see below), whose sum is σ = 3553984512. Its totient is φ = 817922880.

The previous prime is 1791642191. The next prime is 1791642197. The reversal of 1791642195 is 5912461971.

It is not a de Polignac number, because 1791642195 - 2² = 1791642191 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 1791642195.

It is not an unprimeable number, because it can be changed into a prime (1791642191) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 255790 + ... + 262700.

It is an arithmetic number, because the mean of its divisors is an integer number (74041344).

Almost surely, 2^1791642195 is an apocalyptic number.

1791642195 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1791642195 is a deficient number, since it is larger than the sum of its proper divisors (1762342317).

1791642195 is a wasteful number, since it uses less digits than its factorization.

1791642195 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7752 (or 7749 counting only the distinct ones).

The product of its digits is 136080, while the sum is 45.

The square root of 1791642195 is about 42327.7945917337. The cubic root of 1791642195 is about 1214.5547420956.

The spelling of 1791642195 in words is "one billion, seven hundred ninety-one million, six hundred forty-two thousand, one hundred ninety-five".