1641797433 has 12 divisors (see below), whose sum is σ = 2372357988. Its totient is φ = 1094128800.

The previous prime is 1641797419. The next prime is 1641797461. The reversal of 1641797433 is 3347971461.

It can be written as a sum of positive squares in 2 ways, for example, as 258180624 + 1383616809 = 16068^2 + 37197^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1641797433 is a prime.

It is a super-2 number, since 2×1641797433² = 5390997622010778978, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1641797473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6618 + ... + 57683.

It is an arithmetic number, because the mean of its divisors is an integer number (197696499).

Almost surely, 2^1641797433 is an apocalyptic number.

It is an amenable number.

1641797433 is a deficient number, since it is larger than the sum of its proper divisors (730560555).

1641797433 is a wasteful number, since it uses less digits than its factorization.

1641797433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67144 (or 67141 counting only the distinct ones).

The product of its digits is 381024, while the sum is 45.

The square root of 1641797433 is about 40519.0996074691. The cubic root of 1641797433 is about 1179.7043770121.

The spelling of 1641797433 in words is "one billion, six hundred forty-one million, seven hundred ninety-seven thousand, four hundred thirty-three".