1641242273 has 16 divisors (see below), whose sum is σ = 1819124736. Its totient is φ = 1468322640.

The previous prime is 1641242261. The next prime is 1641242329. The reversal of 1641242273 is 3722421461.

It is a cyclic number.

It is not a de Polignac number, because 1641242273 - 2¹⁴ = 1641225889 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1641242243) 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, 180236 + ... + 189122.

It is an arithmetic number, because the mean of its divisors is an integer number (113695296).

Almost surely, 2^1641242273 is an apocalyptic number.

It is an amenable number.

1641242273 is a deficient number, since it is larger than the sum of its proper divisors (177882463).

1641242273 is a wasteful number, since it uses less digits than its factorization.

1641242273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9164.

The product of its digits is 16128, while the sum is 32.

The square root of 1641242273 is about 40512.2484318015. The cubic root of 1641242273 is about 1179.5713929825.

It can be divided in two parts, 16412 and 42273, that added together give a palindrome (58685).

The spelling of 1641242273 in words is "one billion, six hundred forty-one million, two hundred forty-two thousand, two hundred seventy-three".