4155505944 has 32 divisors (see below), whose sum is σ = 10397859840. Its totient is φ = 1383956000.

The previous prime is 4155505919. The next prime is 4155505973. The reversal of 4155505944 is 4495055514.

It is a happy number.

It is a super-2 number, since 2×4155505944² = 34536459301238662272, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 4155505896 and 4155505905.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47592 + ... + 102839.

It is an arithmetic number, because the mean of its divisors is an integer number (324933120).

Almost surely, 2^4155505944 is an apocalyptic number.

It is an amenable number.

4155505944 is an abundant number, since it is smaller than the sum of its proper divisors (6242353896).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4155505944 is a wasteful number, since it uses less digits than its factorization.

4155505944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151591 (or 151587 counting only the distinct ones).

The product of its (nonzero) digits is 360000, while the sum is 42.

The square root of 4155505944 is about 64463.2138820273. The cubic root of 4155505944 is about 1607.7109483902.

The spelling of 4155505944 in words is "four billion, one hundred fifty-five million, five hundred five thousand, nine hundred forty-four".