1167377161 has 2 divisors, whose sum is σ = 1167377162. Its totient is φ = 1167377160.

The previous prime is 1167377153. The next prime is 1167377171. The reversal of 1167377161 is 1617737611.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 587771536 + 579605625 = 24244^2 + 24075^2 .

It is a cyclic number.

It is not a de Polignac number, because 1167377161 - 2³ = 1167377153 is a prime.

It is not a weakly prime, because it can be changed into another prime (1167377171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 583688580 + 583688581.

It is an arithmetic number, because the mean of its divisors is an integer number (583688581).

Almost surely, 2^1167377161 is an apocalyptic number.

It is an amenable number.

1167377161 is a deficient number, since it is larger than the sum of its proper divisors (1).

1167377161 is an equidigital number, since it uses as much as digits as its factorization.

1167377161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 37044, while the sum is 40.

The square root of 1167377161 is about 34166.9015422821. The cubic root of 1167377161 is about 1052.9402580383.

The spelling of 1167377161 in words is "one billion, one hundred sixty-seven million, three hundred seventy-seven thousand, one hundred sixty-one".