1064043820394 has 8 divisors (see below), whose sum is σ = 1626180178500. Its totient is φ = 521983760896.

The previous prime is 1064043820391. The next prime is 1064043820529. The reversal of 1064043820394 is 4930283404601.

It can be written as a sum of positive squares in 2 ways, for example, as 1023627945025 + 40415875369 = 1011745^2 + 201037^2 .

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

It is a super-2 number, since 2×1064043820394² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1064043820391) 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, 5019074519 + ... + 5019074730.

Almost surely, 2^{1064043820394} is an apocalyptic number.

1064043820394 is a deficient number, since it is larger than the sum of its proper divisors (562136358106).

1064043820394 is a wasteful number, since it uses less digits than its factorization.

1064043820394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10038149304.

The product of its (nonzero) digits is 497664, while the sum is 44.

The spelling of 1064043820394 in words is "one trillion, sixty-four billion, forty-three million, eight hundred twenty thousand, three hundred ninety-four".