1088521900 has 36 divisors (see below), whose sum is σ = 2501043048. Its totient is φ = 409795840.

The previous prime is 1088521871. The next prime is 1088521901. The reversal of 1088521900 is 91258801.

It is a super-2 number, since 2×1088521900² = 2369759853559220000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is not an unprimeable number, because it can be changed into a prime (1088521901) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 318454 + ... + 321853.

It is an arithmetic number, because the mean of its divisors is an integer number (69473418).

Almost surely, 2^1088521900 is an apocalyptic number.

1088521900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1088521900 is an abundant number, since it is smaller than the sum of its proper divisors (1412521148).

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

1088521900 is a wasteful number, since it uses less digits than its factorization.

1088521900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 640338 (or 640331 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 34.

The square root of 1088521900 is about 32992.7552653609. The cubic root of 1088521900 is about 1028.6770648597.

The spelling of 1088521900 in words is "one billion, eighty-eight million, five hundred twenty-one thousand, nine hundred".