2153105881 has 2 divisors, whose sum is σ = 2153105882. Its totient is φ = 2153105880.

The previous prime is 2153105869. The next prime is 2153105891. The reversal of 2153105881 is 1885013512.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1414136025 + 738969856 = 37605^2 + 27184^2 .

It is a cyclic number.

It is not a de Polignac number, because 2153105881 - 2¹¹ = 2153103833 is a prime.

It is a super-4 number, since 4×2153105881⁴ (a number of 38 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (2153105891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1076552940 + 1076552941.

It is an arithmetic number, because the mean of its divisors is an integer number (1076552941).

Almost surely, 2^2153105881 is an apocalyptic number.

It is an amenable number.

2153105881 is a deficient number, since it is larger than the sum of its proper divisors (1).

2153105881 is an equidigital number, since it uses as much as digits as its factorization.

2153105881 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9600, while the sum is 34.

The square root of 2153105881 is about 46401.5719669065. The cubic root of 2153105881 is about 1291.2840770423.

The spelling of 2153105881 in words is "two billion, one hundred fifty-three million, one hundred five thousand, eight hundred eighty-one".