1018896401 has 2 divisors, whose sum is σ = 1018896402. Its totient is φ = 1018896400.

The previous prime is 1018896379. The next prime is 1018896407. The reversal of 1018896401 is 1046988101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 762864400 + 256032001 = 27620^2 + 16001^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1018896401 is a prime.

It is not a weakly prime, because it can be changed into another prime (1018896407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 509448200 + 509448201.

It is an arithmetic number, because the mean of its divisors is an integer number (509448201).

Almost surely, 2^1018896401 is an apocalyptic number.

It is an amenable number.

1018896401 is a deficient number, since it is larger than the sum of its proper divisors (1).

1018896401 is an equidigital number, since it uses as much as digits as its factorization.

1018896401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13824, while the sum is 38.

The square root of 1018896401 is about 31920.1566568838. The cubic root of 1018896401 is about 1006.2595367793.

The spelling of 1018896401 in words is "one billion, eighteen million, eight hundred ninety-six thousand, four hundred one".