1038669745 has 4 divisors (see below), whose sum is σ = 1246403700. Its totient is φ = 830935792.

The previous prime is 1038669739. The next prime is 1038669781. The reversal of 1038669745 is 5479668301.

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 813789729 + 224880016 = 28527^2 + 14996^2 .

It is a cyclic number.

It is not a de Polignac number, because 1038669745 - 2¹¹ = 1038667697 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103866970 + ... + 103866979.

It is an arithmetic number, because the mean of its divisors is an integer number (311600925).

Almost surely, 2^1038669745 is an apocalyptic number.

It is an amenable number.

1038669745 is a deficient number, since it is larger than the sum of its proper divisors (207733955).

1038669745 is an equidigital number, since it uses as much as digits as its factorization.

1038669745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207733954.

The product of its (nonzero) digits is 1088640, while the sum is 49.

The square root of 1038669745 is about 32228.3996655124. The cubic root of 1038669745 is about 1012.7272450357.

The spelling of 1038669745 in words is "one billion, thirty-eight million, six hundred sixty-nine thousand, seven hundred forty-five".