2161442067 has 16 divisors (see below), whose sum is σ = 3052912032. Its totient is φ = 1355548160.

The previous prime is 2161442053. The next prime is 2161442081. The reversal of 2161442067 is 7602441612.

It is an interprime number because it is at equal distance from previous prime (2161442053) and next prime (2161442081).

It is a cyclic number.

It is not a de Polignac number, because 2161442067 - 2⁷ = 2161441939 is a prime.

It is a super-4 number, since 4×2161442067⁴ (a number of 38 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (2161442267) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 111217 + ... + 129197.

It is an arithmetic number, because the mean of its divisors is an integer number (190807002).

Almost surely, 2^2161442067 is an apocalyptic number.

2161442067 is a deficient number, since it is larger than the sum of its proper divisors (891469965).

2161442067 is a wasteful number, since it uses less digits than its factorization.

2161442067 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20358.

The product of its (nonzero) digits is 16128, while the sum is 33.

The square root of 2161442067 is about 46491.3117367105. The cubic root of 2161442067 is about 1292.9484203179.

Adding to 2161442067 its reverse (7602441612), we get a palindrome (9763883679).

The spelling of 2161442067 in words is "two billion, one hundred sixty-one million, four hundred forty-two thousand, sixty-seven".