1799509565764 has 9 divisors (see below), whose sum is σ = 3149146435197. Its totient is φ = 899753441424.

The previous prime is 1799509565719. The next prime is 1799509565771. The reversal of 1799509565764 is 4675659059971.

The square root of 1799509565764 is 1341458.

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., 15041060164 + 1784468505600 = 122642^2 + 1335840^2 .

It is a super-2 number, since 2×1799509565764² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 2347552 + ... + 3018280.

Almost surely, 2^{1799509565764} is an apocalyptic number.

1799509565764 is the 1341458-th square number.

It is an amenable number.

1799509565764 is a deficient number, since it is larger than the sum of its proper divisors (1349636869433).

1799509565764 is an frugal number, since it uses more digits than its factorization.

1799509565764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1341462 (or 670731 counting only the distinct ones).

The product of its (nonzero) digits is 642978000, while the sum is 73.

The spelling of 1799509565764 in words is "one trillion, seven hundred ninety-nine billion, five hundred nine million, five hundred sixty-five thousand, seven hundred sixty-four".