2153980877 has 2 divisors, whose sum is σ = 2153980878. Its totient is φ = 2153980876.

The previous prime is 2153980853. The next prime is 2153980949. The reversal of 2153980877 is 7780893512.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2133423721 + 20557156 = 46189^2 + 4534^2 .

It is a cyclic number.

It is not a de Polignac number, because 2153980877 - 2¹⁴ = 2153964493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2153980837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1076990438 + 1076990439.

It is an arithmetic number, because the mean of its divisors is an integer number (1076990439).

Almost surely, 2^2153980877 is an apocalyptic number.

It is an amenable number.

2153980877 is a deficient number, since it is larger than the sum of its proper divisors (1).

2153980877 is an equidigital number, since it uses as much as digits as its factorization.

2153980877 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 846720, while the sum is 50.

The square root of 2153980877 is about 46410.9995259744. Note that the first 3 decimals coincide. The cubic root of 2153980877 is about 1291.4589740584.

The spelling of 2153980877 in words is "two billion, one hundred fifty-three million, nine hundred eighty thousand, eight hundred seventy-seven".