2148380477 has 2 divisors, whose sum is σ = 2148380478. Its totient is φ = 2148380476.

The previous prime is 2148380473. The next prime is 2148380503. The reversal of 2148380477 is 7740838412.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1399208836 + 749171641 = 37406^2 + 27371^2 .

It is a cyclic number.

It is not a de Polignac number, because 2148380477 - 2² = 2148380473 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2148380471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1074190238 + 1074190239.

It is an arithmetic number, because the mean of its divisors is an integer number (1074190239).

Almost surely, 2^2148380477 is an apocalyptic number.

It is an amenable number.

2148380477 is a deficient number, since it is larger than the sum of its proper divisors (1).

2148380477 is an equidigital number, since it uses as much as digits as its factorization.

2148380477 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 301056, while the sum is 44.

The square root of 2148380477 is about 46350.6254218862. The cubic root of 2148380477 is about 1290.3387282274.

The spelling of 2148380477 in words is "two billion, one hundred forty-eight million, three hundred eighty thousand, four hundred seventy-seven".