1138765698 has 48 divisors (see below), whose sum is σ = 2823762240. Its totient is φ = 324904608.

The previous prime is 1138765697. The next prime is 1138765699. The reversal of 1138765698 is 8965678311.

1138765698 is a `hidden beast` number, since 1 + 1 + 3 + 8 + 76 + 569 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (1138765697) and next prime (1138765699).

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (1138765697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 89413 + ... + 101351.

It is an arithmetic number, because the mean of its divisors is an integer number (58828380).

Almost surely, 2^1138765698 is an apocalyptic number.

1138765698 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1138765698 is an abundant number, since it is smaller than the sum of its proper divisors (1684996542).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1138765698 is a wasteful number, since it uses less digits than its factorization.

1138765698 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12711 (or 12708 counting only the distinct ones).

The product of its digits is 2177280, while the sum is 54.

The square root of 1138765698 is about 33745.6026468635. The cubic root of 1138765698 is about 1044.2667713475.

The spelling of 1138765698 in words is "one billion, one hundred thirty-eight million, seven hundred sixty-five thousand, six hundred ninety-eight".