1662007161 has 4 divisors (see below), whose sum is σ = 2216009552. Its totient is φ = 1108004772.

The previous prime is 1662007157. The next prime is 1662007177. The reversal of 1662007161 is 1617002661.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1617002661 = 3 ⋅539000887.

It is not a de Polignac number, because 1662007161 - 2² = 1662007157 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1662007141) 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, 277001191 + ... + 277001196.

It is an arithmetic number, because the mean of its divisors is an integer number (554002388).

Almost surely, 2^1662007161 is an apocalyptic number.

It is an amenable number.

1662007161 is a deficient number, since it is larger than the sum of its proper divisors (554002391).

1662007161 is an equidigital number, since it uses as much as digits as its factorization.

1662007161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 554002390.

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 1662007161 is about 40767.7220482087. The cubic root of 1662007161 is about 1184.5251792781.

The spelling of 1662007161 in words is "one billion, six hundred sixty-two million, seven thousand, one hundred sixty-one".