1377137137 has 2 divisors, whose sum is σ = 1377137138. Its totient is φ = 1377137136.

The previous prime is 1377137131. The next prime is 1377137171. The reversal of 1377137137 is 7317317731.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1142710416 + 234426721 = 33804^2 + 15311^2 .

It is a cyclic number.

It is not a de Polignac number, because 1377137137 - 2³ = 1377137129 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1377137137.

It is not a weakly prime, because it can be changed into another prime (1377137131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 688568568 + 688568569.

It is an arithmetic number, because the mean of its divisors is an integer number (688568569).

Almost surely, 2^1377137137 is an apocalyptic number.

It is an amenable number.

1377137137 is a deficient number, since it is larger than the sum of its proper divisors (1).

1377137137 is an equidigital number, since it uses as much as digits as its factorization.

1377137137 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 64827, while the sum is 40.

The square root of 1377137137 is about 37109.7983961110. The cubic root of 1377137137 is about 1112.5658622288.

The spelling of 1377137137 in words is "one billion, three hundred seventy-seven million, one hundred thirty-seven thousand, one hundred thirty-seven".