2389542147491 has 4 divisors (see below), whose sum is σ = 2390689313352. Its totient is φ = 2388394981632.

The previous prime is 2389542147463. The next prime is 2389542147533. The reversal of 2389542147491 is 1947412459832.

It is a happy number.

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 2389542147491 - 2¹⁸ = 2389541885347 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2389542147491.

It is not an unprimeable number, because it can be changed into a prime (2389542147191) 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, 573579806 + ... + 573583971.

It is an arithmetic number, because the mean of its divisors is an integer number (597672328338).

Almost surely, 2^{2389542147491} is an apocalyptic number.

2389542147491 is a deficient number, since it is larger than the sum of its proper divisors (1147165861).

2389542147491 is a wasteful number, since it uses less digits than its factorization.

2389542147491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1147165860.

The product of its digits is 17418240, while the sum is 59.

The spelling of 2389542147491 in words is "two trillion, three hundred eighty-nine billion, five hundred forty-two million, one hundred forty-seven thousand, four hundred ninety-one".