191473147 has 2 divisors, whose sum is σ = 191473148. Its totient is φ = 191473146.

The previous prime is 191473133. The next prime is 191473181. The reversal of 191473147 is 741374191.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 191473147 - 2¹¹ = 191471099 is a prime.

It is not a weakly prime, because it can be changed into another prime (191453147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95736573 + 95736574.

It is an arithmetic number, because the mean of its divisors is an integer number (95736574).

Almost surely, 2^191473147 is an apocalyptic number.

191473147 is a deficient number, since it is larger than the sum of its proper divisors (1).

191473147 is an equidigital number, since it uses as much as digits as its factorization.

191473147 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21168, while the sum is 37.

The square root of 191473147 is about 13837.3822307545. The cubic root of 191473147 is about 576.3716686830.

The spelling of 191473147 in words is "one hundred ninety-one million, four hundred seventy-three thousand, one hundred forty-seven".