1275977107 has 2 divisors, whose sum is σ = 1275977108. Its totient is φ = 1275977106.

The previous prime is 1275977093. The next prime is 1275977161. The reversal of 1275977107 is 7017795721.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1275977107 - 2¹⁹ = 1275452819 is a prime.

It is not a weakly prime, because it can be changed into another prime (1275972107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 637988553 + 637988554.

It is an arithmetic number, because the mean of its divisors is an integer number (637988554).

Almost surely, 2^1275977107 is an apocalyptic number.

1275977107 is a deficient number, since it is larger than the sum of its proper divisors (1).

1275977107 is an equidigital number, since it uses as much as digits as its factorization.

1275977107 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216090, while the sum is 46.

The square root of 1275977107 is about 35720.8217570649. The cubic root of 1275977107 is about 1084.6283725182.

The spelling of 1275977107 in words is "one billion, two hundred seventy-five million, nine hundred seventy-seven thousand, one hundred seven".