189503772047 has 4 divisors (see below), whose sum is σ = 189563687880. Its totient is φ = 189443856216.

The previous prime is 189503772037. The next prime is 189503772049. The reversal of 189503772047 is 740277305981.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 740277305981 = 300431 ⋅2464051.

It is a cyclic number.

It is not a de Polignac number, because 189503772047 - 2²⁶ = 189436663183 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 189503772047.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189503772049) 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, 29953172 + ... + 29959497.

It is an arithmetic number, because the mean of its divisors is an integer number (47390921970).

Almost surely, 2^189503772047 is an apocalyptic number.

189503772047 is a deficient number, since it is larger than the sum of its proper divisors (59915833).

189503772047 is an equidigital number, since it uses as much as digits as its factorization.

189503772047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59915832.

The product of its (nonzero) digits is 2963520, while the sum is 53.

The spelling of 189503772047 in words is "one hundred eighty-nine billion, five hundred three million, seven hundred seventy-two thousand, forty-seven".