1047145445 has 4 divisors (see below), whose sum is σ = 1256574540. Its totient is φ = 837716352.

The previous prime is 1047145441. The next prime is 1047145457. The reversal of 1047145445 is 5445417401.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 589955521 + 457189924 = 24289^2 + 21382^2 .

It is a cyclic number.

It is not a de Polignac number, because 1047145445 - 2² = 1047145441 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1047145441) 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, 104714540 + ... + 104714549.

It is an arithmetic number, because the mean of its divisors is an integer number (314143635).

Almost surely, 2^1047145445 is an apocalyptic number.

It is an amenable number.

1047145445 is a deficient number, since it is larger than the sum of its proper divisors (209429095).

1047145445 is an equidigital number, since it uses as much as digits as its factorization.

1047145445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209429094.

The product of its (nonzero) digits is 44800, while the sum is 35.

The square root of 1047145445 is about 32359.6267747327. The cubic root of 1047145445 is about 1015.4744544290.

The spelling of 1047145445 in words is "one billion, forty-seven million, one hundred forty-five thousand, four hundred forty-five".