189863082877487 has 4 divisors (see below), whose sum is σ = 191820434247456. Its totient is φ = 187905731507520.

The previous prime is 189863082877459. The next prime is 189863082877513. The reversal of 189863082877487 is 784778280368981.

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 189863082877487 - 2⁶ = 189863082877423 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 189863082877399 and 189863082877408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189863082877417) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 978675684839 + ... + 978675685032.

It is an arithmetic number, because the mean of its divisors is an integer number (47955108561864).

Almost surely, 2^{189863082877487} is an apocalyptic number.

189863082877487 is a deficient number, since it is larger than the sum of its proper divisors (1957351369969).

189863082877487 is an equidigital number, since it uses as much as digits as its factorization.

189863082877487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1957351369968.

The product of its (nonzero) digits is 14566293504, while the sum is 86.

The spelling of 189863082877487 in words is "one hundred eighty-nine trillion, eight hundred sixty-three billion, eighty-two million, eight hundred seventy-seven thousand, four hundred eighty-seven".