1052394894769 has 9 divisors (see below), whose sum is σ = 1054680336619. Its totient is φ = 1050114401320.

The previous prime is 1052394894739. The next prime is 1052394894773. The reversal of 1052394894769 is 9674984932501.

The square root of 1052394894769 is 1025863.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 244891368225 + 807503526544 = 494865^2 + 898612^2 .

It is not a de Polignac number, because 1052394894769 - 2¹³ = 1052394886577 is a prime.

It is a super-2 number, since 2×1052394894769² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1052394894739) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 669887754 + ... + 669889324.

It is a 1-persistent number, because it is pandigital, but 2⋅1052394894769 = 2104789789538 is not.

Almost surely, 2^{1052394894769} is an apocalyptic number.

1052394894769 is the 1025863-rd square number.

1052394894769 is the 512932-nd centered octagonal number.

It is an amenable number.

1052394894769 is a deficient number, since it is larger than the sum of its proper divisors (2285441850).

1052394894769 is an frugal number, since it uses more digits than its factorization.

1052394894769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4448 (or 2224 counting only the distinct ones).

The product of its (nonzero) digits is 117573120, while the sum is 67.

The spelling of 1052394894769 in words is "one trillion, fifty-two billion, three hundred ninety-four million, eight hundred ninety-four thousand, seven hundred sixty-nine".