1813968001 has 2 divisors, whose sum is σ = 1813968002. Its totient is φ = 1813968000.

The previous prime is 1813967993. The next prime is 1813968049. The reversal of 1813968001 is 1008693181.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1725156225 + 88811776 = 41535^2 + 9424^2 .

It is a cyclic number.

It is not a de Polignac number, because 1813968001 - 2³ = 1813967993 is a prime.

It is not a weakly prime, because it can be changed into another prime (1813968061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 906984000 + 906984001.

It is an arithmetic number, because the mean of its divisors is an integer number (906984001).

Almost surely, 2^1813968001 is an apocalyptic number.

It is an amenable number.

1813968001 is a deficient number, since it is larger than the sum of its proper divisors (1).

1813968001 is an equidigital number, since it uses as much as digits as its factorization.

1813968001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 37.

The square root of 1813968001 is about 42590.7032226518. The cubic root of 1813968001 is about 1219.5788210654.

The spelling of 1813968001 in words is "one billion, eight hundred thirteen million, nine hundred sixty-eight thousand, one".