1138026605 has 16 divisors (see below), whose sum is σ = 1398798720. Its totient is φ = 888353088.

The previous prime is 1138026587. The next prime is 1138026611. The reversal of 1138026605 is 5066208311.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1138026605 - 2⁶ = 1138026541 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 281579 + ... + 285591.

It is an arithmetic number, because the mean of its divisors is an integer number (87424920).

Almost surely, 2^1138026605 is an apocalyptic number.

It is an amenable number.

1138026605 is a deficient number, since it is larger than the sum of its proper divisors (260772115).

1138026605 is a wasteful number, since it uses less digits than its factorization.

1138026605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5380.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 1138026605 is about 33734.6499166658. The cubic root of 1138026605 is about 1044.0408023302.

The spelling of 1138026605 in words is "one billion, one hundred thirty-eight million, twenty-six thousand, six hundred five".