2231889766 has 4 divisors (see below), whose sum is σ = 3347834652. Its totient is φ = 1115944882.

The previous prime is 2231889763. The next prime is 2231889767. The reversal of 2231889766 is 6679881322.

It is a semiprime because it is the product of two primes.

It is a super-3 number, since 3×2231889766³ (a number of 29 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2231889763) 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 as a sum of consecutive naturals, namely, 557972440 + ... + 557972443.

It is an arithmetic number, because the mean of its divisors is an integer number (836958663).

Almost surely, 2^2231889766 is an apocalyptic number.

2231889766 is a deficient number, since it is larger than the sum of its proper divisors (1115944886).

2231889766 is a wasteful number, since it uses less digits than its factorization.

2231889766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1115944885.

The product of its digits is 1741824, while the sum is 52.

The square root of 2231889766 is about 47242.8805853326. The cubic root of 2231889766 is about 1306.8455005504.

The spelling of 2231889766 in words is "two billion, two hundred thirty-one million, eight hundred eighty-nine thousand, seven hundred sixty-six".