1612662161 has 4 divisors (see below), whose sum is σ = 1759267824. Its totient is φ = 1466056500.

The previous prime is 1612662133. The next prime is 1612662173.

1612662161 is nontrivially palindromic in base 10.

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 a de Polignac number, because none of the positive numbers 2^k-1612662161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1612662101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73302815 + ... + 73302836.

It is an arithmetic number, because the mean of its divisors is an integer number (439816956).

Almost surely, 2^1612662161 is an apocalyptic number.

1612662161 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1612662161 is a deficient number, since it is larger than the sum of its proper divisors (146605663).

1612662161 is a wasteful number, since it uses less digits than its factorization.

1612662161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146605662.

The product of its digits is 5184, while the sum is 32.

The square root of 1612662161 is about 40157.9651003384. The cubic root of 1612662161 is about 1172.6843571221.

It can be divided in two parts, 16126 and 62161, that added together give a palindrome (78287).

The spelling of 1612662161 in words is "one billion, six hundred twelve million, six hundred sixty-two thousand, one hundred sixty-one".