1816696926801 has 45 divisors (see below), whose sum is σ = 2804778699129. Its totient is φ = 1171819920600.

The previous prime is 1816696926791. The next prime is 1816696926827. The reversal of 1816696926801 is 1086296966181.

The square root of 1816696926801 is 1347849.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 1816696926801 - 2¹⁷ = 1816696795729 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1816696926881) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 376047456 + ... + 376052286.

Almost surely, 2^{1816696926801} is an apocalyptic number.

1816696926801 is the 1347849-th square number.

1816696926801 is the 673925-th centered octagonal number.

It is an amenable number.

1816696926801 is a deficient number, since it is larger than the sum of its proper divisors (988081772328).

1816696926801 is an frugal number, since it uses more digits than its factorization.

1816696926801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9736 (or 4865 counting only the distinct ones).

The product of its (nonzero) digits is 13436928, while the sum is 63.

The spelling of 1816696926801 in words is "one trillion, eight hundred sixteen billion, six hundred ninety-six million, nine hundred twenty-six thousand, eight hundred one".