2143152540 has 48 divisors (see below), whose sum is σ = 6667587360. Its totient is φ = 571507200.

The previous prime is 2143152523. The next prime is 2143152553. The reversal of 2143152540 is 452513412.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1983861 + ... + 1984940.

It is an arithmetic number, because the mean of its divisors is an integer number (138908070).

Almost surely, 2^2143152540 is an apocalyptic number.

2143152540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2143152540 is an abundant number, since it is smaller than the sum of its proper divisors (4524434820).

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

2143152540 is a wasteful number, since it uses less digits than its factorization.

2143152540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3968819 (or 3968811 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 2143152540 is about 46294.1955324855. The cubic root of 2143152540 is about 1289.2912277367.

Adding to 2143152540 its reverse (452513412), we get a palindrome (2595665952).

The spelling of 2143152540 in words is "two billion, one hundred forty-three million, one hundred fifty-two thousand, five hundred forty".