2152174140 has 36 divisors (see below), whose sum is σ = 6528262104. Its totient is φ = 573913056.

The previous prime is 2152174121. The next prime is 2152174151. The reversal of 2152174140 is 414712512.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5978082 + ... + 5978441.

It is an arithmetic number, because the mean of its divisors is an integer number (181340614).

Almost surely, 2^2152174140 is an apocalyptic number.

2152174140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2152174140 is an abundant number, since it is smaller than the sum of its proper divisors (4376087964).

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

2152174140 is a wasteful number, since it uses less digits than its factorization.

2152174140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11956538 (or 11956533 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The square root of 2152174140 is about 46391.5309081302. The cubic root of 2152174140 is about 1291.0977855521.

Adding to 2152174140 its reverse (414712512), we get a palindrome (2566886652).

The spelling of 2152174140 in words is "two billion, one hundred fifty-two million, one hundred seventy-four thousand, one hundred forty".