1881222746 has 16 divisors (see below), whose sum is σ = 3121032264. Its totient is φ = 844789824.

The previous prime is 1881222743. The next prime is 1881222773. The reversal of 1881222746 is 6472221881.

It can be written as a sum of positive squares in 4 ways, for example, as 1809566521 + 71656225 = 42539^2 + 8465^2 .

It is not an unprimeable number, because it can be changed into a prime (1881222743) 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 7 ways as a sum of consecutive naturals, for example, 976805 + ... + 978728.

Almost surely, 2^1881222746 is an apocalyptic number.

1881222746 is a deficient number, since it is larger than the sum of its proper divisors (1239809518).

1881222746 is a wasteful number, since it uses less digits than its factorization.

1881222746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1955585.

The product of its digits is 86016, while the sum is 41.

The square root of 1881222746 is about 43373.0647522169. The cubic root of 1881222746 is about 1234.4686740648.

The spelling of 1881222746 in words is "one billion, eight hundred eighty-one million, two hundred twenty-two thousand, seven hundred forty-six".