189178799545 has 8 divisors (see below), whose sum is σ = 227060293824. Its totient is φ = 151312550064.

The previous prime is 189178799533. The next prime is 189178799609. The reversal of 189178799545 is 545997871981.

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 189178799545 - 2⁷ = 189178799417 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3783879 + ... + 3833548.

It is an arithmetic number, because the mean of its divisors is an integer number (28382536728).

Almost surely, 2^189178799545 is an apocalyptic number.

It is an amenable number.

189178799545 is a deficient number, since it is larger than the sum of its proper divisors (37881494279).

189178799545 is an equidigital number, since it uses as much as digits as its factorization.

189178799545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7622399.

The product of its digits is 228614400, while the sum is 73.

The spelling of 189178799545 in words is "one hundred eighty-nine billion, one hundred seventy-eight million, seven hundred ninety-nine thousand, five hundred forty-five".