1633161243 has 8 divisors (see below), whose sum is σ = 2488626688. Its totient is φ = 933234984.

The previous prime is 1633161221. The next prime is 1633161263. The reversal of 1633161243 is 3421613361.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1633161243 - 2¹³ = 1633153051 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1633161243.

It is not an unprimeable number, because it can be changed into a prime (1633161263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38884771 + ... + 38884812.

It is an arithmetic number, because the mean of its divisors is an integer number (311078336).

Almost surely, 2^1633161243 is an apocalyptic number.

1633161243 is a deficient number, since it is larger than the sum of its proper divisors (855465445).

1633161243 is an equidigital number, since it uses as much as digits as its factorization.

1633161243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77769593.

The product of its digits is 7776, while the sum is 30.

The square root of 1633161243 is about 40412.3897214703. The cubic root of 1633161243 is about 1177.6322441075.

The spelling of 1633161243 in words is "one billion, six hundred thirty-three million, one hundred sixty-one thousand, two hundred forty-three".