1138451490601 has 2 divisors, whose sum is σ = 1138451490602. Its totient is φ = 1138451490600.

The previous prime is 1138451490571. The next prime is 1138451490661. The reversal of 1138451490601 is 1060941548311.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1118357010576 + 20094480025 = 1057524^2 + 141755^2 .

It is a cyclic number.

It is not a de Polignac number, because 1138451490601 - 2⁵ = 1138451490569 is a prime.

It is not a weakly prime, because it can be changed into another prime (1138451490661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 569225745300 + 569225745301.

It is an arithmetic number, because the mean of its divisors is an integer number (569225745301).

Almost surely, 2^{1138451490601} is an apocalyptic number.

It is an amenable number.

1138451490601 is a deficient number, since it is larger than the sum of its proper divisors (1).

1138451490601 is an equidigital number, since it uses as much as digits as its factorization.

1138451490601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 103680, while the sum is 43.

The spelling of 1138451490601 in words is "one trillion, one hundred thirty-eight billion, four hundred fifty-one million, four hundred ninety thousand, six hundred one".