2152181541 has 8 divisors (see below), whose sum is σ = 2962142464. Its totient is φ = 1388504160.

The previous prime is 2152181539. The next prime is 2152181567. The reversal of 2152181541 is 1451812512.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2152181541 - 2¹ = 2152181539 is a prime.

It is a super-2 number, since 2×2152181541² = 9263770770842269362, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2152181499 and 2152181508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2152181501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11570776 + ... + 11570961.

It is an arithmetic number, because the mean of its divisors is an integer number (370267808).

Almost surely, 2^2152181541 is an apocalyptic number.

It is an amenable number.

2152181541 is a deficient number, since it is larger than the sum of its proper divisors (809960923).

2152181541 is a wasteful number, since it uses less digits than its factorization.

2152181541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23141771.

The product of its digits is 3200, while the sum is 30.

The square root of 2152181541 is about 46391.6106747761. The cubic root of 2152181541 is about 1291.0992655135.

The spelling of 2152181541 in words is "two billion, one hundred fifty-two million, one hundred eighty-one thousand, five hundred forty-one".