2143979046 has 24 divisors (see below), whose sum is σ = 5067587304. Its totient is φ = 649690560.

The previous prime is 2143979039. The next prime is 2143979053. The reversal of 2143979046 is 6409793412.

It is a happy number.

2143979046 is a `hidden beast` number, since 214 + 397 + 9 + 0 + 46 = 666.

It is an interprime number because it is at equal distance from previous prime (2143979039) and next prime (2143979053).

It is a super-2 number, since 2×2143979046² = 9193292299374140232, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2143978992 and 2143979010.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5413891 + ... + 5414286.

It is an arithmetic number, because the mean of its divisors is an integer number (211149471).

Almost surely, 2^2143979046 is an apocalyptic number.

2143979046 is an abundant number, since it is smaller than the sum of its proper divisors (2923608258).

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

2143979046 is a wasteful number, since it uses less digits than its factorization.

2143979046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10828196 (or 10828193 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 45.

The square root of 2143979046 is about 46303.1213418707. The cubic root of 2143979046 is about 1289.4569446672.

It can be divided in two parts, 2143 and 979046, that added together give a palindrome (981189).

The spelling of 2143979046 in words is "two billion, one hundred forty-three million, nine hundred seventy-nine thousand, forty-six".