2161769330 has 32 divisors (see below), whose sum is σ = 4600419840. Its totient is φ = 715619520.

The previous prime is 2161769299. The next prime is 2161769339. The reversal of 2161769330 is 339671612.

It is a happy number.

It is a super-2 number, since 2×2161769330² = 9346493272257297800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2161769339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 530426 + ... + 534485.

It is an arithmetic number, because the mean of its divisors is an integer number (143763120).

Almost surely, 2^2161769330 is an apocalyptic number.

2161769330 is an abundant number, since it is smaller than the sum of its proper divisors (2438650510).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2161769330 is a wasteful number, since it uses less digits than its factorization.

2161769330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1064954.

The product of its (nonzero) digits is 40824, while the sum is 38.

The square root of 2161769330 is about 46494.8312181042. The cubic root of 2161769330 is about 1293.0136719434.

The spelling of 2161769330 in words is "two billion, one hundred sixty-one million, seven hundred sixty-nine thousand, three hundred thirty".