1138157668 has 24 divisors (see below), whose sum is σ = 2092164480. Its totient is φ = 540724800.

The previous prime is 1138157659. The next prime is 1138157689. The reversal of 1138157668 is 8667518311.

It is a Harshad number since it is a multiple of its sum of digits (46).

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, 27073 + ... + 54856.

It is an arithmetic number, because the mean of its divisors is an integer number (87173520).

Almost surely, 2^1138157668 is an apocalyptic number.

It is an amenable number.

1138157668 is a deficient number, since it is larger than the sum of its proper divisors (954006812).

1138157668 is a wasteful number, since it uses less digits than its factorization.

1138157668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82107 (or 82105 counting only the distinct ones).

The product of its digits is 241920, while the sum is 46.

The square root of 1138157668 is about 33736.5924183223. The cubic root of 1138157668 is about 1044.0808804404.

The spelling of 1138157668 in words is "one billion, one hundred thirty-eight million, one hundred fifty-seven thousand, six hundred sixty-eight".