1369471872 has 128 divisors (see below), whose sum is σ = 3885465600. Its totient is φ = 426424320.

The previous prime is 1369471867. The next prime is 1369471879. The reversal of 1369471872 is 2781749631.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (48).

Its product of digits (508032) is a multiple of the sum of its prime divisors (4032).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1369471879) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 343233 + ... + 347199.

It is an arithmetic number, because the mean of its divisors is an integer number (30355200).

Almost surely, 2^1369471872 is an apocalyptic number.

1369471872 is a gapful number since it is divisible by the number (12) 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 1369471872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1942732800).

1369471872 is an abundant number, since it is smaller than the sum of its proper divisors (2515993728).

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

1369471872 is a wasteful number, since it uses less digits than its factorization.

1369471872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4044 (or 4032 counting only the distinct ones).

The product of its digits is 508032, while the sum is 48.

The square root of 1369471872 is about 37006.3760992616. The cubic root of 1369471872 is about 1110.4978077161.

The spelling of 1369471872 in words is "one billion, three hundred sixty-nine million, four hundred seventy-one thousand, eight hundred seventy-two".