1916165361 has 64 divisors (see below), whose sum is σ = 2961884160. Its totient is φ = 1091439360.

The previous prime is 1916165359. The next prime is 1916165399. The reversal of 1916165361 is 1635616191.

It is not a de Polignac number, because 1916165361 - 2¹ = 1916165359 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1916165311) 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 in 63 ways as a sum of consecutive naturals, for example, 4826415 + ... + 4826811.

It is an arithmetic number, because the mean of its divisors is an integer number (46279440).

Almost surely, 2^1916165361 is an apocalyptic number.

1916165361 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1916165361 is a deficient number, since it is larger than the sum of its proper divisors (1045718799).

1916165361 is a wasteful number, since it uses less digits than its factorization.

1916165361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 574.

The product of its digits is 29160, while the sum is 39.

The square root of 1916165361 is about 43774.0260999602. The cubic root of 1916165361 is about 1242.0650123758.

The spelling of 1916165361 in words is "one billion, nine hundred sixteen million, one hundred sixty-five thousand, three hundred sixty-one".