1655033161 has 4 divisors (see below), whose sum is σ = 1712103300. Its totient is φ = 1597963024.

The previous prime is 1655033153. The next prime is 1655033179. The reversal of 1655033161 is 1613305561.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 689377536 + 965655625 = 26256^2 + 31075^2 .

It is a cyclic number.

It is not a de Polignac number, because 1655033161 - 2³ = 1655033153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1655033111) 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, 28535026 + ... + 28535083.

It is an arithmetic number, because the mean of its divisors is an integer number (428025825).

Almost surely, 2^1655033161 is an apocalyptic number.

It is an amenable number.

1655033161 is a deficient number, since it is larger than the sum of its proper divisors (57070139).

1655033161 is an equidigital number, since it uses as much as digits as its factorization.

1655033161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57070138.

The product of its (nonzero) digits is 8100, while the sum is 31.

The square root of 1655033161 is about 40682.0987782096. The cubic root of 1655033161 is about 1182.8660488038.

The spelling of 1655033161 in words is "one billion, six hundred fifty-five million, thirty-three thousand, one hundred sixty-one".