1098901888 has 64 divisors (see below), whose sum is σ = 2582737920. Its totient is φ = 455754240.

The previous prime is 1098901873. The next prime is 1098901933. The reversal of 1098901888 is 8881098901.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

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, 7995 + ... + 47557.

It is an arithmetic number, because the mean of its divisors is an integer number (40355280).

Almost surely, 2^1098901888 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1098901888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1291368960).

1098901888 is an abundant number, since it is smaller than the sum of its proper divisors (1483836032).

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

1098901888 is an equidigital number, since it uses as much as digits as its factorization.

1098901888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39615 (or 39603 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 52.

The square root of 1098901888 is about 33149.6891086478. The cubic root of 1098901888 is about 1031.9364983061.

The spelling of 1098901888 in words is "one billion, ninety-eight million, nine hundred one thousand, eight hundred eighty-eight".