1138590049 has 9 divisors (see below), whose sum is σ = 1168457619. Its totient is φ = 1109469840.

The previous prime is 1138590031. The next prime is 1138590059. The reversal of 1138590049 is 9400958311.

The square root of 1138590049 is 33743.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 54863649 + 1083726400 = 7407^2 + 32920^2 .

It is not a de Polignac number, because 1138590049 - 2⁵ = 1138590017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1138589993 and 1138590020.

It is not an unprimeable number, because it can be changed into a prime (1138590059) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1383052 + ... + 1383874.

Almost surely, 2^1138590049 is an apocalyptic number.

1138590049 is the 33743-rd square number.

1138590049 is the 16872-nd centered octagonal number.

It is an amenable number.

1138590049 is a deficient number, since it is larger than the sum of its proper divisors (29867570).

1138590049 is an frugal number, since it uses more digits than its factorization.

1138590049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1728 (or 864 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 40.

The cubic root of 1138590049 is about 1044.2130775847.

The spelling of 1138590049 in words is "one billion, one hundred thirty-eight million, five hundred ninety thousand, forty-nine".