1369888144 has 45 divisors (see below), whose sum is σ = 2806966827. Its totient is φ = 647561952.

The previous prime is 1369888139. The next prime is 1369888153. The reversal of 1369888144 is 4418889631.

The square root of 1369888144 is 37012.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1369888091 and 1369888100.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 2812669 + ... + 2813155.

Almost surely, 2^1369888144 is an apocalyptic number.

1369888144 is the 37012-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1369888144

1369888144 is an abundant number, since it is smaller than the sum of its proper divisors (1437078683).

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

1369888144 is an frugal number, since it uses more digits than its factorization.

1369888144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1020 (or 508 counting only the distinct ones).

The product of its digits is 1327104, while the sum is 52.

The cubic root of 1369888144 is about 1110.6103139366.

The spelling of 1369888144 in words is "one billion, three hundred sixty-nine million, eight hundred eighty-eight thousand, one hundred forty-four".