1820761166 has 16 divisors (see below), whose sum is σ = 3304911456. Its totient is φ = 734424576.

The previous prime is 1820761097. The next prime is 1820761211. The reversal of 1820761166 is 6611670281.

It is a super-2 number, since 2×1820761166² = 6630342447227359112, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3824891 + ... + 3825366.

It is an arithmetic number, because the mean of its divisors is an integer number (206556966).

Almost surely, 2^1820761166 is an apocalyptic number.

1820761166 is a deficient number, since it is larger than the sum of its proper divisors (1484150290).

1820761166 is a wasteful number, since it uses less digits than its factorization.

1820761166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7650283.

The product of its (nonzero) digits is 24192, while the sum is 38.

The square root of 1820761166 is about 42670.3780859743. The cubic root of 1820761166 is about 1221.0993329394.

The spelling of 1820761166 in words is "one billion, eight hundred twenty million, seven hundred sixty-one thousand, one hundred sixty-six".