1138098851 has 4 divisors (see below), whose sum is σ = 1138787352. Its totient is φ = 1137410352.

The previous prime is 1138098827. The next prime is 1138098883. The reversal of 1138098851 is 1588908311.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1138098851 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1138098151) 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 3 ways as a sum of consecutive naturals, for example, 341765 + ... + 345078.

It is an arithmetic number, because the mean of its divisors is an integer number (284696838).

Almost surely, 2^1138098851 is an apocalyptic number.

1138098851 is a deficient number, since it is larger than the sum of its proper divisors (688501).

1138098851 is an equidigital number, since it uses as much as digits as its factorization.

1138098851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 688500.

The product of its (nonzero) digits is 69120, while the sum is 44.

The square root of 1138098851 is about 33735.7206978004. The cubic root of 1138098851 is about 1044.0628950110.

The spelling of 1138098851 in words is "one billion, one hundred thirty-eight million, ninety-eight thousand, eight hundred fifty-one".