1819362940651 has 2 divisors, whose sum is σ = 1819362940652. Its totient is φ = 1819362940650.

The previous prime is 1819362940643. The next prime is 1819362940739. The reversal of 1819362940651 is 1560492639181.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1819362940651 - 2³ = 1819362940643 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1819362940592 and 1819362940601.

It is not a weakly prime, because it can be changed into another prime (1819362940601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 909681470325 + 909681470326.

It is an arithmetic number, because the mean of its divisors is an integer number (909681470326).

Almost surely, 2^{1819362940651} is an apocalyptic number.

1819362940651 is a deficient number, since it is larger than the sum of its proper divisors (1).

1819362940651 is an equidigital number, since it uses as much as digits as its factorization.

1819362940651 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2799360, while the sum is 55.

The spelling of 1819362940651 in words is "one trillion, eight hundred nineteen billion, three hundred sixty-two million, nine hundred forty thousand, six hundred fifty-one".