1916144033 has 8 divisors (see below), whose sum is σ = 1953208296. Its totient is φ = 1879113600.

The previous prime is 1916143993. The next prime is 1916144047. The reversal of 1916144033 is 3304416191.

It can be written as a sum of positive squares in 4 ways, for example, as 75047569 + 1841096464 = 8663^2 + 42908^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1916144033 - 2¹² = 1916139937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1916144233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 126443 + ... + 140783.

It is an arithmetic number, because the mean of its divisors is an integer number (244151037).

Almost surely, 2^1916144033 is an apocalyptic number.

It is an amenable number.

1916144033 is a deficient number, since it is larger than the sum of its proper divisors (37064263).

1916144033 is a wasteful number, since it uses less digits than its factorization.

1916144033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16915.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 1916144033 is about 43773.7824844964. The cubic root of 1916144033 is about 1242.0604040643.

The spelling of 1916144033 in words is "one billion, nine hundred sixteen million, one hundred forty-four thousand, thirty-three".