1045672709 has 2 divisors, whose sum is σ = 1045672710. Its totient is φ = 1045672708.

The previous prime is 1045672699. The next prime is 1045672729. The reversal of 1045672709 is 9072765401.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 660335809 + 385336900 = 25697^2 + 19630^2 .

It is a cyclic number.

It is not a de Polignac number, because 1045672709 - 2²⁴ = 1028895493 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1045672729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 522836354 + 522836355.

It is an arithmetic number, because the mean of its divisors is an integer number (522836355).

Almost surely, 2^1045672709 is an apocalyptic number.

It is an amenable number.

1045672709 is a deficient number, since it is larger than the sum of its proper divisors (1).

1045672709 is an equidigital number, since it uses as much as digits as its factorization.

1045672709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 105840, while the sum is 41.

The square root of 1045672709 is about 32336.8630049360. The cubic root of 1045672709 is about 1014.9981667402.

The spelling of 1045672709 in words is "one billion, forty-five million, six hundred seventy-two thousand, seven hundred nine".