1937664161 has 2 divisors, whose sum is σ = 1937664162. Its totient is φ = 1937664160.

The previous prime is 1937664149. The next prime is 1937664173. The reversal of 1937664161 is 1614667391.

It is a balanced prime because it is at equal distance from previous prime (1937664149) and next prime (1937664173).

It can be written as a sum of positive squares in only one way, i.e., 1525371136 + 412293025 = 39056^2 + 20305^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1937664161 is a prime.

It is not a weakly prime, because it can be changed into another prime (1937664101) 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, 968832080 + 968832081.

It is an arithmetic number, because the mean of its divisors is an integer number (968832081).

Almost surely, 2^1937664161 is an apocalyptic number.

It is an amenable number.

1937664161 is a deficient number, since it is larger than the sum of its proper divisors (1).

1937664161 is an equidigital number, since it uses as much as digits as its factorization.

1937664161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 163296, while the sum is 44.

The square root of 1937664161 is about 44018.9068583035. The cubic root of 1937664161 is about 1246.6929461115.

The spelling of 1937664161 in words is "one billion, nine hundred thirty-seven million, six hundred sixty-four thousand, one hundred sixty-one".