1973223791 has 16 divisors (see below), whose sum is σ = 2500459008. Its totient is φ = 1512367200.

The previous prime is 1973223719. The next prime is 1973223793.

1973223791 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 1973223791 - 2³⁰ = 899481967 is a prime.

It is a super-2 number, since 2×1973223791² = 7787224258736823362, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1973223793) 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 15 ways as a sum of consecutive naturals, for example, 205355 + ... + 214748.

It is an arithmetic number, because the mean of its divisors is an integer number (156278688).

Almost surely, 2^1973223791 is an apocalyptic number.

1973223791 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1973223791 is a deficient number, since it is larger than the sum of its proper divisors (527235217).

1973223791 is a wasteful number, since it uses less digits than its factorization.

1973223791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 420182.

The product of its digits is 142884, while the sum is 44.

The square root of 1973223791 is about 44420.9836788876. The cubic root of 1973223791 is about 1254.2731178060.

The spelling of 1973223791 in words is "one billion, nine hundred seventy-three million, two hundred twenty-three thousand, seven hundred ninety-one".