345994533369 has 15 divisors (see below), whose sum is σ = 516863939647. Its totient is φ = 230659492968.

The previous prime is 345994533347. The next prime is 345994533427. The reversal of 345994533369 is 963335499543.

It is a happy number.

The square root of 345994533369 is 588213.

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

345994533369 is a `hidden beast` number, since 3 + 4 + 5 + 9 + 94 + 533 + 3 + 6 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 328414955625 + 17579577744 = 573075^2 + 132588^2 .

It is not a de Polignac number, because 345994533369 - 2¹⁵ = 345994500601 is a prime.

It is a super-2 number, since 2×345994533369² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (345994533569) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 5261239 + ... + 5326595.

Almost surely, 2^345994533369 is an apocalyptic number.

345994533369 is the 588213-rd square number.

345994533369 is the 294107-th centered octagonal number.

It is an amenable number.

345994533369 is a deficient number, since it is larger than the sum of its proper divisors (170869406278).

345994533369 is an frugal number, since it uses more digits than its factorization.

345994533369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130726 (or 65360 counting only the distinct ones).

The product of its digits is 141717600, while the sum is 63.

The spelling of 345994533369 in words is "three hundred forty-five billion, nine hundred ninety-four million, five hundred thirty-three thousand, three hundred sixty-nine".