2165440348 has 24 divisors (see below), whose sum is σ = 4014738000. Its totient is φ = 1018445568.

The previous prime is 2165440327. The next prime is 2165440373. The reversal of 2165440348 is 8430445612.

2165440348 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×2165440348² = 9378263801492722208, which contains 22 as substring.

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, 124363 + ... + 140701.

It is an arithmetic number, because the mean of its divisors is an integer number (167280750).

Almost surely, 2^2165440348 is an apocalyptic number.

It is an amenable number.

2165440348 is a deficient number, since it is larger than the sum of its proper divisors (1849297652).

2165440348 is a wasteful number, since it uses less digits than its factorization.

2165440348 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18309 (or 18307 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 37.

The square root of 2165440348 is about 46534.2921725473. The cubic root of 2165440348 is about 1293.7451702994.

The spelling of 2165440348 in words is "two billion, one hundred sixty-five million, four hundred forty thousand, three hundred forty-eight".