1138618705658 has 24 divisors (see below), whose sum is σ = 1987363055412. Its totient is φ = 487834631424.

The previous prime is 1138618705649. The next prime is 1138618705673. The reversal of 1138618705658 is 8565078168311.

It can be written as a sum of positive squares in 2 ways, for example, as 1138346026489 + 272679169 = 1066933^2 + 16513^2 .

It is a hoax number, since the sum of its digits (59) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 1138618705597 and 1138618705606.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1391735 + ... + 2052842.

Almost surely, 2^{1138618705658} is an apocalyptic number.

1138618705658 is a deficient number, since it is larger than the sum of its proper divisors (848744349754).

1138618705658 is a wasteful number, since it uses less digits than its factorization.

1138618705658 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3447966 (or 3447959 counting only the distinct ones).

The product of its (nonzero) digits is 9676800, while the sum is 59.

The spelling of 1138618705658 in words is "one trillion, one hundred thirty-eight billion, six hundred eighteen million, seven hundred five thousand, six hundred fifty-eight".