1320401177 has 2 divisors, whose sum is σ = 1320401178. Its totient is φ = 1320401176.

The previous prime is 1320401141. The next prime is 1320401183. The reversal of 1320401177 is 7711040231.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 978188176 + 342213001 = 31276^2 + 18499^2 .

It is a cyclic number.

It is not a de Polignac number, because 1320401177 - 2¹⁰ = 1320400153 is a prime.

It is not a weakly prime, because it can be changed into another prime (1320401377) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660200588 + 660200589.

It is an arithmetic number, because the mean of its divisors is an integer number (660200589).

Almost surely, 2^1320401177 is an apocalyptic number.

It is an amenable number.

1320401177 is a deficient number, since it is larger than the sum of its proper divisors (1).

1320401177 is an equidigital number, since it uses as much as digits as its factorization.

1320401177 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1176, while the sum is 26.

The square root of 1320401177 is about 36337.3248464991. The cubic root of 1320401177 is about 1097.0724294442.

The spelling of 1320401177 in words is "one billion, three hundred twenty million, four hundred one thousand, one hundred seventy-seven".