1641500275 has 12 divisors (see below), whose sum is σ = 2082797992. Its totient is φ = 1282659840.

The previous prime is 1641500261. The next prime is 1641500279. The reversal of 1641500275 is 5720051461.

It is not a de Polignac number, because 1641500275 - 2⁵ = 1641500243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1641500279) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 762414 + ... + 764563.

Almost surely, 2^1641500275 is an apocalyptic number.

1641500275 is a deficient number, since it is larger than the sum of its proper divisors (441297717).

1641500275 is a wasteful number, since it uses less digits than its factorization.

1641500275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1527030 (or 1527025 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 31.

The square root of 1641500275 is about 40515.4325535345. The cubic root of 1641500275 is about 1179.6331989771.

The spelling of 1641500275 in words is "one billion, six hundred forty-one million, five hundred thousand, two hundred seventy-five".