1929181819066 has 32 divisors (see below), whose sum is σ = 3054258524160. Its totient is φ = 911371616496.

The previous prime is 1929181819057. The next prime is 1929181819067. The reversal of 1929181819066 is 6609181819291.

It is a super-2 number, since 2×1929181819066² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1929181818995 and 1929181819013.

It is not an unprimeable number, because it can be changed into a prime (1929181819067) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21763551 + ... + 21852013.

It is an arithmetic number, because the mean of its divisors is an integer number (95445578880).

Almost surely, 2^{1929181819066} is an apocalyptic number.

1929181819066 is a deficient number, since it is larger than the sum of its proper divisors (1125076705094).

1929181819066 is a wasteful number, since it uses less digits than its factorization.

1929181819066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90018.

The product of its (nonzero) digits is 3359232, while the sum is 61.

The spelling of 1929181819066 in words is "one trillion, nine hundred twenty-nine billion, one hundred eighty-one million, eight hundred nineteen thousand, sixty-six".