4239345645 has 24 divisors (see below), whose sum is σ = 7734948000. Its totient is φ = 2141984736.

The previous prime is 4239345631. The next prime is 4239345659. The reversal of 4239345645 is 5465439324.

It is an interprime number because it is at equal distance from previous prime (4239345631) and next prime (4239345659).

It is not a de Polignac number, because 4239345645 - 2²⁰ = 4238297069 is a prime.

It is a super-3 number, since 3×4239345645³ (a number of 30 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 4239345645.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2478295 + ... + 2480004.

It is an arithmetic number, because the mean of its divisors is an integer number (322289500).

Almost surely, 2^4239345645 is an apocalyptic number.

4239345645 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

4239345645 is a deficient number, since it is larger than the sum of its proper divisors (3495602355).

4239345645 is a wasteful number, since it uses less digits than its factorization.

4239345645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4958329 (or 4958326 counting only the distinct ones).

The product of its digits is 1555200, while the sum is 45.

The square root of 4239345645 is about 65110.2576020092. The cubic root of 4239345645 is about 1618.4512003560.

The spelling of 4239345645 in words is "four billion, two hundred thirty-nine million, three hundred forty-five thousand, six hundred forty-five".