1377911243 has 2 divisors, whose sum is σ = 1377911244. Its totient is φ = 1377911242.

The previous prime is 1377911239. The next prime is 1377911257. The reversal of 1377911243 is 3421197731.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1377911243 - 2² = 1377911239 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1377911197 and 1377911206.

It is not a weakly prime, because it can be changed into another prime (1377911263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 688955621 + 688955622.

It is an arithmetic number, because the mean of its divisors is an integer number (688955622).

Almost surely, 2^1377911243 is an apocalyptic number.

1377911243 is a deficient number, since it is larger than the sum of its proper divisors (1).

1377911243 is an equidigital number, since it uses as much as digits as its factorization.

1377911243 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31752, while the sum is 38.

The square root of 1377911243 is about 37120.2268716127. The cubic root of 1377911243 is about 1112.7742855742.

The spelling of 1377911243 in words is "one billion, three hundred seventy-seven million, nine hundred eleven thousand, two hundred forty-three".