1340883977 has 2 divisors, whose sum is σ = 1340883978. Its totient is φ = 1340883976.

The previous prime is 1340883961. The next prime is 1340883983. The reversal of 1340883977 is 7793880431.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1133062921 + 207821056 = 33661^2 + 14416^2 .

It is a cyclic number.

It is not a de Polignac number, because 1340883977 - 2⁴ = 1340883961 is a prime.

It is not a weakly prime, because it can be changed into another prime (1340883997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 670441988 + 670441989.

It is an arithmetic number, because the mean of its divisors is an integer number (670441989).

Almost surely, 2^1340883977 is an apocalyptic number.

It is an amenable number.

1340883977 is a deficient number, since it is larger than the sum of its proper divisors (1).

1340883977 is an equidigital number, since it uses as much as digits as its factorization.

1340883977 is an evil number, because the sum of its binary digits is even.

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

The square root of 1340883977 is about 36618.0826505157. The cubic root of 1340883977 is about 1102.7161463837.

The spelling of 1340883977 in words is "one billion, three hundred forty million, eight hundred eighty-three thousand, nine hundred seventy-seven".