189435764147 has 6 divisors (see below), whose sum is σ = 220364052228. Its totient is φ = 162373512084.

The previous prime is 189435764143. The next prime is 189435764149. The reversal of 189435764147 is 741467534981.

It is not a de Polignac number, because 189435764147 - 2² = 189435764143 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (189435764143) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1933017953 + ... + 1933018050.

It is an arithmetic number, because the mean of its divisors is an integer number (36727342038).

Almost surely, 2^189435764147 is an apocalyptic number.

189435764147 is a deficient number, since it is larger than the sum of its proper divisors (30928288081).

189435764147 is an equidigital number, since it uses as much as digits as its factorization.

189435764147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3866036017 (or 3866036010 counting only the distinct ones).

The product of its digits is 20321280, while the sum is 59.

The spelling of 189435764147 in words is "one hundred eighty-nine billion, four hundred thirty-five million, seven hundred sixty-four thousand, one hundred forty-seven".