1138982693 has 2 divisors, whose sum is σ = 1138982694. Its totient is φ = 1138982692.

The previous prime is 1138982659. The next prime is 1138982699. The reversal of 1138982693 is 3962898311.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 660335809 + 478646884 = 25697^2 + 21878^2 .

It is a cyclic number.

It is not a de Polignac number, because 1138982693 - 2²⁴ = 1122205477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1138982699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 569491346 + 569491347.

It is an arithmetic number, because the mean of its divisors is an integer number (569491347).

Almost surely, 2^1138982693 is an apocalyptic number.

It is an amenable number.

1138982693 is a deficient number, since it is larger than the sum of its proper divisors (1).

1138982693 is an equidigital number, since it uses as much as digits as its factorization.

1138982693 is an evil number, because the sum of its binary digits is even.

The product of its digits is 559872, while the sum is 50.

The square root of 1138982693 is about 33748.8176533638. The cubic root of 1138982693 is about 1044.3330964563. Note that the first 3 decimals are identical.

The spelling of 1138982693 in words is "one billion, one hundred thirty-eight million, nine hundred eighty-two thousand, six hundred ninety-three".