1869073145 has 8 divisors (see below), whose sum is σ = 2243141640. Its totient is φ = 1495089280.

The previous prime is 1869073139. The next prime is 1869073147. The reversal of 1869073145 is 5413709681.

It can be written as a sum of positive squares in 4 ways, for example, as 1135150864 + 733922281 = 33692^2 + 27091^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1869073145 - 2⁸ = 1869072889 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1869073096 and 1869073105.

It is not an unprimeable number, because it can be changed into a prime (1869073147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47975 + ... + 77715.

It is an arithmetic number, because the mean of its divisors is an integer number (280392705).

Almost surely, 2^1869073145 is an apocalyptic number.

It is an amenable number.

1869073145 is a deficient number, since it is larger than the sum of its proper divisors (374068495).

1869073145 is a wasteful number, since it uses less digits than its factorization.

1869073145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42315.

The product of its (nonzero) digits is 181440, while the sum is 44.

The square root of 1869073145 is about 43232.7785944878. The cubic root of 1869073145 is about 1231.8053874109.

The spelling of 1869073145 in words is "one billion, eight hundred sixty-nine million, seventy-three thousand, one hundred forty-five".