1974542454791 has 4 divisors (see below), whose sum is σ = 1974554573784. Its totient is φ = 1974530335800.

The previous prime is 1974542454713. The next prime is 1974542454799.

1974542454791 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1974542454791 - 2¹⁸ = 1974542192647 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 (1974542454799) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5811725 + ... + 6142086.

It is an arithmetic number, because the mean of its divisors is an integer number (493638643446).

Almost surely, 2^{1974542454791} is an apocalyptic number.

1974542454791 is a deficient number, since it is larger than the sum of its proper divisors (12118993).

1974542454791 is a wasteful number, since it uses less digits than its factorization.

1974542454791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12118992.

The product of its digits is 50803200, while the sum is 62.

The spelling of 1974542454791 in words is "one trillion, nine hundred seventy-four billion, five hundred forty-two million, four hundred fifty-four thousand, seven hundred ninety-one".