1377370139 has 2 divisors, whose sum is σ = 1377370140. Its totient is φ = 1377370138.

The previous prime is 1377370087. The next prime is 1377370151. The reversal of 1377370139 is 9310737731.

It is a strong prime.

It is an emirp because it is prime and its reverse (9310737731) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1377370139 - 2¹² = 1377366043 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1377370096 and 1377370105.

It is not a weakly prime, because it can be changed into another prime (1377370639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 688685069 + 688685070.

It is an arithmetic number, because the mean of its divisors is an integer number (688685070).

Almost surely, 2^1377370139 is an apocalyptic number.

1377370139 is a deficient number, since it is larger than the sum of its proper divisors (1).

1377370139 is an equidigital number, since it uses as much as digits as its factorization.

1377370139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 83349, while the sum is 41.

The square root of 1377370139 is about 37112.9376228829. The cubic root of 1377370139 is about 1112.6286048188.

The spelling of 1377370139 in words is "one billion, three hundred seventy-seven million, three hundred seventy thousand, one hundred thirty-nine".