4350394681 has 4 divisors (see below), whose sum is σ = 4361353252. Its totient is φ = 4339436112.

The previous prime is 4350394663. The next prime is 4350394691. The reversal of 4350394681 is 1864930534.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1864930534 = 2 ⋅932465267.

It can be written as a sum of positive squares in 2 ways, for example, as 3235903225 + 1114491456 = 56885^2 + 33384^2 .

It is a cyclic number.

It is not a de Polignac number, because 4350394681 - 2⁵ = 4350394649 is a prime.

It is a super-2 number, since 2×4350394681² = 37851867760946183522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4350394651) 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, 5478690 + ... + 5479483.

It is an arithmetic number, because the mean of its divisors is an integer number (1090338313).

Almost surely, 2^4350394681 is an apocalyptic number.

It is an amenable number.

4350394681 is a deficient number, since it is larger than the sum of its proper divisors (10958571).

4350394681 is a wasteful number, since it uses less digits than its factorization.

4350394681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10958570.

The product of its (nonzero) digits is 311040, while the sum is 43.

The square root of 4350394681 is about 65957.5217924385. The cubic root of 4350394681 is about 1632.4612698017.

The spelling of 4350394681 in words is "four billion, three hundred fifty million, three hundred ninety-four thousand, six hundred eighty-one".