2138283977 has 2 divisors, whose sum is σ = 2138283978. Its totient is φ = 2138283976.

The previous prime is 2138283967. The next prime is 2138284003. The reversal of 2138283977 is 7793828312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2103047881 + 35236096 = 45859^2 + 5936^2 .

It is a cyclic number.

It is not a de Polignac number, because 2138283977 - 2¹⁶ = 2138218441 is a prime.

It is not a weakly prime, because it can be changed into another prime (2138283967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1069141988 + 1069141989.

It is an arithmetic number, because the mean of its divisors is an integer number (1069141989).

Almost surely, 2^2138283977 is an apocalyptic number.

It is an amenable number.

2138283977 is a deficient number, since it is larger than the sum of its proper divisors (1).

2138283977 is an equidigital number, since it uses as much as digits as its factorization.

2138283977 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1016064, while the sum is 50.

The square root of 2138283977 is about 46241.5827691916. The cubic root of 2138283977 is about 1288.3142005812.

The spelling of 2138283977 in words is "two billion, one hundred thirty-eight million, two hundred eighty-three thousand, nine hundred seventy-seven".