1641032245 has 4 divisors (see below), whose sum is σ = 1969238700. Its totient is φ = 1312825792.

The previous prime is 1641032243. The next prime is 1641032249. The reversal of 1641032245 is 5422301461.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5422301461 = 1693 ⋅3202777.

It can be written as a sum of positive squares in 2 ways, for example, as 815159601 + 825872644 = 28551^2 + 28738^2 .

It is a cyclic number.

It is not a de Polignac number, because 1641032245 - 2¹ = 1641032243 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1641032243) 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 3 ways as a sum of consecutive naturals, for example, 164103220 + ... + 164103229.

It is an arithmetic number, because the mean of its divisors is an integer number (492309675).

Almost surely, 2^1641032245 is an apocalyptic number.

It is an amenable number.

1641032245 is a deficient number, since it is larger than the sum of its proper divisors (328206455).

1641032245 is an equidigital number, since it uses as much as digits as its factorization.

1641032245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328206454.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 1641032245 is about 40509.6561945421. The cubic root of 1641032245 is about 1179.5210746773.

The spelling of 1641032245 in words is "one billion, six hundred forty-one million, thirty-two thousand, two hundred forty-five".