1640161033 has 16 divisors (see below), whose sum is σ = 1947703680. Its totient is φ = 1351357056.

The previous prime is 1640161031. The next prime is 1640161063. The reversal of 1640161033 is 3301610461.

It is a happy number.

It is not a de Polignac number, because 1640161033 - 2¹ = 1640161031 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1640160989 and 1640161007.

It is not an unprimeable number, because it can be changed into a prime (1640161031) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28285 + ... + 63877.

It is an arithmetic number, because the mean of its divisors is an integer number (121731480).

Almost surely, 2^1640161033 is an apocalyptic number.

It is an amenable number.

1640161033 is a deficient number, since it is larger than the sum of its proper divisors (307542647).

1640161033 is a wasteful number, since it uses less digits than its factorization.

1640161033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35856.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 1640161033 is about 40498.9016270812. The cubic root of 1640161033 is about 1179.3123046948.

Adding to 1640161033 its reverse (3301610461), we get a palindrome (4941771494).

The spelling of 1640161033 in words is "one billion, six hundred forty million, one hundred sixty-one thousand, thirty-three".