1377387097 has 2 divisors, whose sum is σ = 1377387098. Its totient is φ = 1377387096.

The previous prime is 1377387061. The next prime is 1377387127. The reversal of 1377387097 is 7907837731.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1359839376 + 17547721 = 36876^2 + 4189^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1377387097 is a prime.

It is not a weakly prime, because it can be changed into another prime (1377387047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 688693548 + 688693549.

It is an arithmetic number, because the mean of its divisors is an integer number (688693549).

Almost surely, 2^1377387097 is an apocalyptic number.

It is an amenable number.

1377387097 is a deficient number, since it is larger than the sum of its proper divisors (1).

1377387097 is an equidigital number, since it uses as much as digits as its factorization.

1377387097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1555848, while the sum is 52.

The square root of 1377387097 is about 37113.1660869832. The cubic root of 1377387097 is about 1112.6331709791.

The spelling of 1377387097 in words is "one billion, three hundred seventy-seven million, three hundred eighty-seven thousand, ninety-seven".