1138898088 has 96 divisors (see below), whose sum is σ = 3193032960. Its totient is φ = 366347520.

The previous prime is 1138898077. The next prime is 1138898113. The reversal of 1138898088 is 8808988311.

It is an unprimeable number.

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, 1376731 + ... + 1377557.

It is an arithmetic number, because the mean of its divisors is an integer number (33260760).

Almost surely, 2^1138898088 is an apocalyptic number.

1138898088 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1138898088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1596516480).

1138898088 is an abundant number, since it is smaller than the sum of its proper divisors (2054134872).

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

1138898088 is a wasteful number, since it uses less digits than its factorization.

1138898088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1487 (or 1480 counting only the distinct ones).

The product of its (nonzero) digits is 884736, while the sum is 54.

The square root of 1138898088 is about 33747.5641787670. The cubic root of 1138898088 is about 1044.3072377112.

The spelling of 1138898088 in words is "one billion, one hundred thirty-eight million, eight hundred ninety-eight thousand, eighty-eight".