1138562408 has 8 divisors (see below), whose sum is σ = 2134804530. Its totient is φ = 569281200.

The previous prime is 1138562407. The next prime is 1138562419. The reversal of 1138562408 is 8042658311.

It can be written as a sum of positive squares in only one way, i.e., 1098392164 + 40170244 = 33142^2 + 6338^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (1138562401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71160143 + ... + 71160158.

Almost surely, 2^1138562408 is an apocalyptic number.

It is an amenable number.

1138562408 is a deficient number, since it is larger than the sum of its proper divisors (996242122).

1138562408 is a wasteful number, since it uses less digits than its factorization.

1138562408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142320307 (or 142320303 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 38.

The square root of 1138562408 is about 33742.5904162677. The cubic root of 1138562408 is about 1044.2046275644.

The spelling of 1138562408 in words is "one billion, one hundred thirty-eight million, five hundred sixty-two thousand, four hundred eight".