1138965518 has 16 divisors (see below), whose sum is σ = 1727008800. Its totient is φ = 563328000.

The previous prime is 1138965493. The next prime is 1138965539. The reversal of 1138965518 is 8155698311.

It is a super-3 number, since 3×1138965518³ (a number of 28 digits) contains 333 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64958 + ... + 80606.

It is an arithmetic number, because the mean of its divisors is an integer number (107938050).

Almost surely, 2^1138965518 is an apocalyptic number.

1138965518 is a deficient number, since it is larger than the sum of its proper divisors (588043282).

1138965518 is a wasteful number, since it uses less digits than its factorization.

1138965518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16043.

The product of its digits is 259200, while the sum is 47.

The square root of 1138965518 is about 33748.5631990460. The cubic root of 1138965518 is about 1044.3278471781.

The spelling of 1138965518 in words is "one billion, one hundred thirty-eight million, nine hundred sixty-five thousand, five hundred eighteen".