1138426801 has 2 divisors, whose sum is σ = 1138426802. Its totient is φ = 1138426800.

The previous prime is 1138426799. The next prime is 1138426867. The reversal of 1138426801 is 1086248311.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 749390625 + 389036176 = 27375^2 + 19724^2 .

It is an emirp because it is prime and its reverse (1086248311) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1138426801 - 2¹ = 1138426799 is a prime.

Together with 1138426799, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1138424801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 569213400 + 569213401.

It is an arithmetic number, because the mean of its divisors is an integer number (569213401).

Almost surely, 2^1138426801 is an apocalyptic number.

It is an amenable number.

1138426801 is a deficient number, since it is larger than the sum of its proper divisors (1).

1138426801 is an equidigital number, since it uses as much as digits as its factorization.

1138426801 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9216, while the sum is 34.

The square root of 1138426801 is about 33740.5809226812. The cubic root of 1138426801 is about 1044.1631697054.

The spelling of 1138426801 in words is "one billion, one hundred thirty-eight million, four hundred twenty-six thousand, eight hundred one".