4345864781 has 4 divisors (see below), whose sum is σ = 4346669532. Its totient is φ = 4345060032.

The previous prime is 4345864763. The next prime is 4345864799. The reversal of 4345864781 is 1874685434.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (4345864763) and next prime (4345864799).

It can be written as a sum of positive squares in 2 ways, for example, as 3397840681 + 948024100 = 58291^2 + 30790^2 .

It is a cyclic number.

It is not a de Polignac number, because 4345864781 - 2¹⁸ = 4345602637 is a prime.

It is a super-2 number, since 2×4345864781² = 37773081389472355922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4345864381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 394220 + ... + 405093.

It is an arithmetic number, because the mean of its divisors is an integer number (1086667383).

Almost surely, 2^4345864781 is an apocalyptic number.

It is an amenable number.

4345864781 is a deficient number, since it is larger than the sum of its proper divisors (804751).

4345864781 is an equidigital number, since it uses as much as digits as its factorization.

4345864781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 804750.

The product of its digits is 2580480, while the sum is 50.

The square root of 4345864781 is about 65923.1733231949. The cubic root of 4345864781 is about 1631.8944664803.

The spelling of 4345864781 in words is "four billion, three hundred forty-five million, eight hundred sixty-four thousand, seven hundred eighty-one".