1145871047 has 2 divisors, whose sum is σ = 1145871048. Its totient is φ = 1145871046.

The previous prime is 1145871007. The next prime is 1145871079. The reversal of 1145871047 is 7401785411.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1145871047 - 2¹⁴ = 1145854663 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1145871047.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1145871007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 572935523 + 572935524.

It is an arithmetic number, because the mean of its divisors is an integer number (572935524).

Almost surely, 2^1145871047 is an apocalyptic number.

1145871047 is a deficient number, since it is larger than the sum of its proper divisors (1).

1145871047 is an equidigital number, since it uses as much as digits as its factorization.

1145871047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31360, while the sum is 38.

The square root of 1145871047 is about 33850.7170825080. The cubic root of 1145871047 is about 1046.4341768074.

The spelling of 1145871047 in words is "one billion, one hundred forty-five million, eight hundred seventy-one thousand, forty-seven".