1138860553 has 2 divisors, whose sum is σ = 1138860554. Its totient is φ = 1138860552.

The previous prime is 1138860529. The next prime is 1138860559. The reversal of 1138860553 is 3550688311.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1061912569 + 76947984 = 32587^2 + 8772^2 .

It is an emirp because it is prime and its reverse (3550688311) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1138860553 - 2⁵ = 1138860521 is a prime.

It is a zygodrome in base 3.

It is not a weakly prime, because it can be changed into another prime (1138860559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 569430276 + 569430277.

It is an arithmetic number, because the mean of its divisors is an integer number (569430277).

Almost surely, 2^1138860553 is an apocalyptic number.

It is an amenable number.

1138860553 is a deficient number, since it is larger than the sum of its proper divisors (1).

1138860553 is an equidigital number, since it uses as much as digits as its factorization.

1138860553 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 86400, while the sum is 40.

The square root of 1138860553 is about 33747.0080599747. The cubic root of 1138860553 is about 1044.2957650713.

The spelling of 1138860553 in words is "one billion, one hundred thirty-eight million, eight hundred sixty thousand, five hundred fifty-three".