1369888100 has 108 divisors (see below), whose sum is σ = 3474402624. Its totient is φ = 467449920.

The previous prime is 1369888061. The next prime is 1369888123. The reversal of 1369888100 is 18889631.

It is a happy number.

It is a super-2 number, since 2×1369888100² = 3753186813043220000, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1288169 + ... + 1289231.

Almost surely, 2^1369888100 is an apocalyptic number.

1369888100 is a gapful number since it is divisible by the number (10) 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 1369888100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1737201312).

1369888100 is an abundant number, since it is smaller than the sum of its proper divisors (2104514524).

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

1369888100 is a wasteful number, since it uses less digits than its factorization.

1369888100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1354 (or 1340 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 44.

The square root of 1369888100 is about 37011.9994055982. Note that the first 3 decimals coincide. The cubic root of 1369888100 is about 1110.6103020459.

Adding to 1369888100 its sum of digits (44), we get a square (1369888144 = 37012²).

The spelling of 1369888100 in words is "one billion, three hundred sixty-nine million, eight hundred eighty-eight thousand, one hundred".