1813948066 has 16 divisors (see below), whose sum is σ = 3110618304. Its totient is φ = 777158064.

The previous prime is 1813948007. The next prime is 1813948067. The reversal of 1813948066 is 6608493181.

It is a super-2 number, since 2×1813948066² = 6580815172290280712, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1813948067) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28801 + ... + 66763.

It is an arithmetic number, because the mean of its divisors is an integer number (194413644).

Almost surely, 2^1813948066 is an apocalyptic number.

1813948066 is a deficient number, since it is larger than the sum of its proper divisors (1296670238).

1813948066 is a wasteful number, since it uses less digits than its factorization.

1813948066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41385.

The product of its (nonzero) digits is 248832, while the sum is 46.

The square root of 1813948066 is about 42590.4691920622. The cubic root of 1813948066 is about 1219.5743534392.

The spelling of 1813948066 in words is "one billion, eight hundred thirteen million, nine hundred forty-eight thousand, sixty-six".