1633145161 has 4 divisors (see below), whose sum is σ = 1633613824. Its totient is φ = 1632676500.

The previous prime is 1633145141. The next prime is 1633145177. The reversal of 1633145161 is 1615413361.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1633145161 - 2²¹ = 1631048009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1633145141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 229065 + ... + 236086.

It is an arithmetic number, because the mean of its divisors is an integer number (408403456).

Almost surely, 2^1633145161 is an apocalyptic number.

It is an amenable number.

1633145161 is a deficient number, since it is larger than the sum of its proper divisors (468663).

1633145161 is an equidigital number, since it uses as much as digits as its factorization.

1633145161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 468662.

The product of its digits is 6480, while the sum is 31.

The square root of 1633145161 is about 40412.1907473475. The cubic root of 1633145161 is about 1177.6283786504.

The spelling of 1633145161 in words is "one billion, six hundred thirty-three million, one hundred forty-five thousand, one hundred sixty-one".