189452020499 has 8 divisors (see below), whose sum is σ = 219748186368. Its totient is φ = 159963752520.

The previous prime is 189452020481. The next prime is 189452020519. The reversal of 189452020499 is 994020254981.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 189452020499 - 2¹⁶ = 189451954963 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 189452020499.

It is not an unprimeable number, because it can be changed into a prime (189452020409) 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 7 ways as a sum of consecutive naturals, for example, 201973967 + ... + 201974904.

It is an arithmetic number, because the mean of its divisors is an integer number (27468523296).

Almost surely, 2^189452020499 is an apocalyptic number.

189452020499 is a deficient number, since it is larger than the sum of its proper divisors (30296165869).

189452020499 is an equidigital number, since it uses as much as digits as its factorization.

189452020499 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 403948945.

The product of its (nonzero) digits is 1866240, while the sum is 53.

The spelling of 189452020499 in words is "one hundred eighty-nine billion, four hundred fifty-two million, twenty thousand, four hundred ninety-nine".