1377396149 has 2 divisors, whose sum is σ = 1377396150. Its totient is φ = 1377396148.

The previous prime is 1377396133. The next prime is 1377396191. The reversal of 1377396149 is 9416937731.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1067002225 + 310393924 = 32665^2 + 17618^2 .

It is a cyclic number.

It is not a de Polignac number, because 1377396149 - 2⁴ = 1377396133 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1377396097 and 1377396106.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1377396199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 688698074 + 688698075.

It is an arithmetic number, because the mean of its divisors is an integer number (688698075).

Almost surely, 2^1377396149 is an apocalyptic number.

It is an amenable number.

1377396149 is a deficient number, since it is larger than the sum of its proper divisors (1).

1377396149 is an equidigital number, since it uses as much as digits as its factorization.

1377396149 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 857304, while the sum is 50.

The square root of 1377396149 is about 37113.2880381138. The cubic root of 1377396149 is about 1112.6356083315.

The spelling of 1377396149 in words is "one billion, three hundred seventy-seven million, three hundred ninety-six thousand, one hundred forty-nine".