1973977411 has 4 divisors (see below), whose sum is σ = 2255974192. Its totient is φ = 1691980632.

The previous prime is 1973977403. The next prime is 1973977427. The reversal of 1973977411 is 1147793791.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1147793791 = 211 ⋅5439781.

It is a cyclic number.

It is not a de Polignac number, because 1973977411 - 2³ = 1973977403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1973977441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 140998380 + ... + 140998393.

It is an arithmetic number, because the mean of its divisors is an integer number (563993548).

Almost surely, 2^1973977411 is an apocalyptic number.

1973977411 is a deficient number, since it is larger than the sum of its proper divisors (281996781).

1973977411 is an equidigital number, since it uses as much as digits as its factorization.

1973977411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281996780.

The product of its digits is 333396, while the sum is 49.

The square root of 1973977411 is about 44429.4655718477. The cubic root of 1973977411 is about 1254.4327761613.

The spelling of 1973977411 in words is "one billion, nine hundred seventy-three million, nine hundred seventy-seven thousand, four hundred eleven".