1975115791 has 12 divisors (see below), whose sum is σ = 2172095352. Its totient is φ = 1794650000.

The previous prime is 1975115783. The next prime is 1975115851.

1975115791 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 1975115791 - 2³ = 1975115783 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 (1975115771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 390861 + ... + 395881.

It is an arithmetic number, because the mean of its divisors is an integer number (181007946).

Almost surely, 2^1975115791 is an apocalyptic number.

1975115791 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1975115791 is a deficient number, since it is larger than the sum of its proper divisors (196979561).

1975115791 is a wasteful number, since it uses less digits than its factorization.

1975115791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8294 (or 8283 counting only the distinct ones).

The product of its digits is 99225, while the sum is 46.

The square root of 1975115791 is about 44442.2748180153. The cubic root of 1975115791 is about 1254.6738709097.

It can be divided in two parts, 197511 and 5791, that added together give a palindrome (203302).

The spelling of 1975115791 in words is "one billion, nine hundred seventy-five million, one hundred fifteen thousand, seven hundred ninety-one".