1338674977 has 2 divisors, whose sum is σ = 1338674978. Its totient is φ = 1338674976.

The previous prime is 1338674933. The next prime is 1338674989. The reversal of 1338674977 is 7794768331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1241928081 + 96746896 = 35241^2 + 9836^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1338674977 is a prime.

It is not a weakly prime, because it can be changed into another prime (1338674177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 669337488 + 669337489.

It is an arithmetic number, because the mean of its divisors is an integer number (669337489).

Almost surely, 2^1338674977 is an apocalyptic number.

It is an amenable number.

1338674977 is a deficient number, since it is larger than the sum of its proper divisors (1).

1338674977 is an equidigital number, since it uses as much as digits as its factorization.

1338674977 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5334336, while the sum is 55.

The square root of 1338674977 is about 36587.9075242080. The cubic root of 1338674977 is about 1102.1102677530.

The spelling of 1338674977 in words is "one billion, three hundred thirty-eight million, six hundred seventy-four thousand, nine hundred seventy-seven".