1641074533 has 24 divisors (see below), whose sum is σ = 1980487800. Its totient is φ = 1354243968.

The previous prime is 1641074509. The next prime is 1641074599. The reversal of 1641074533 is 3354701461.

It can be written as a sum of positive squares in 4 ways, for example, as 677717089 + 963357444 = 26033^2 + 31038^2 .

It is not a de Polignac number, because 1641074533 - 2¹³ = 1641066341 is a prime.

It is a super-2 number, since 2×1641074533² = 5386251245722336178, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1641074503) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 562683 + ... + 565591.

It is an arithmetic number, because the mean of its divisors is an integer number (82520325).

Almost surely, 2^1641074533 is an apocalyptic number.

It is an amenable number.

1641074533 is a deficient number, since it is larger than the sum of its proper divisors (339413267).

1641074533 is a wasteful number, since it uses less digits than its factorization.

1641074533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3349 (or 3342 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 34.

The square root of 1641074533 is about 40510.1781408080. The cubic root of 1641074533 is about 1179.5312063406.

Adding to 1641074533 its reverse (3354701461), we get a palindrome (4995775994).

The spelling of 1641074533 in words is "one billion, six hundred forty-one million, seventy-four thousand, five hundred thirty-three".