1872866066 has 8 divisors (see below), whose sum is σ = 2809752780. Its totient is φ = 936281808.

The previous prime is 1872866063. The next prime is 1872866069. The reversal of 1872866066 is 6606682781.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1872866063) and next prime (1872866069).

It can be written as a sum of positive squares in 2 ways, for example, as 1781262025 + 91604041 = 42205^2 + 9571^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (1872866063) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59441 + ... + 85316.

Almost surely, 2^1872866066 is an apocalyptic number.

1872866066 is a deficient number, since it is larger than the sum of its proper divisors (936886714).

1872866066 is a wasteful number, since it uses less digits than its factorization.

1872866066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151228.

The product of its (nonzero) digits is 1161216, while the sum is 50.

The square root of 1872866066 is about 43276.6226270027. The cubic root of 1872866066 is about 1232.6380610264.

The spelling of 1872866066 in words is "one billion, eight hundred seventy-two million, eight hundred sixty-six thousand, sixty-six".