1369686888 has 128 divisors (see below), whose sum is σ = 3995136000. Its totient is φ = 434220480.

The previous prime is 1369686887. The next prime is 1369686971. The reversal of 1369686888 is 8886869631.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (1369686883) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 393331 + ... + 396797.

It is an arithmetic number, because the mean of its divisors is an integer number (31212000).

Almost surely, 2^1369686888 is an apocalyptic number.

1369686888 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 1369686888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1997568000).

1369686888 is an abundant number, since it is smaller than the sum of its proper divisors (2625449112).

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

1369686888 is a wasteful number, since it uses less digits than its factorization.

1369686888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3572 (or 3562 counting only the distinct ones).

The product of its digits is 23887872, while the sum is 63.

The square root of 1369686888 is about 37009.2811062306. The cubic root of 1369686888 is about 1110.5559231366. Note that the first 3 decimals are identical.

The spelling of 1369686888 in words is "one billion, three hundred sixty-nine million, six hundred eighty-six thousand, eight hundred eighty-eight".