2188895146 has 16 divisors (see below), whose sum is σ = 3480885576. Its totient is φ = 1028763136.

The previous prime is 2188895143. The next prime is 2188895153. The reversal of 2188895146 is 6415988812.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2166437025 + 22458121 = 46545^2 + 4739^2 .

It is a super-2 number, since 2×2188895146² = 9582523920364722632, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2188895093 and 2188895102.

It is not an unprimeable number, because it can be changed into a prime (2188895141) 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 7 ways as a sum of consecutive naturals, for example, 13291 + ... + 67486.

Almost surely, 2^2188895146 is an apocalyptic number.

2188895146 is a deficient number, since it is larger than the sum of its proper divisors (1291990430).

2188895146 is a wasteful number, since it uses less digits than its factorization.

2188895146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81593.

The product of its digits is 1105920, while the sum is 52.

The square root of 2188895146 is about 46785.6296954524. The cubic root of 2188895146 is about 1298.3994396659.

The spelling of 2188895146 in words is "two billion, one hundred eighty-eight million, eight hundred ninety-five thousand, one hundred forty-six".