1369815552 has 120 divisors (see below), whose sum is σ = 4518255456. Its totient is φ = 391366656.

The previous prime is 1369815547. The next prime is 1369815553. The reversal of 1369815552 is 2555189631.

1369815552 is a `hidden beast` number, since 1 + 3 + 6 + 98 + 1 + 5 + 552 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 1369815498 and 1369815507.

It is not an unprimeable number, because it can be changed into a prime (1369815553) 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, 11023 + ... + 53489.

Almost surely, 2^1369815552 is an apocalyptic number.

1369815552 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 1369815552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2259127728).

1369815552 is an abundant number, since it is smaller than the sum of its proper divisors (3148439904).

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

1369815552 is an equidigital number, since it uses as much as digits as its factorization.

1369815552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42498 (or 42479 counting only the distinct ones).

The product of its digits is 324000, while the sum is 45.

The square root of 1369815552 is about 37011.0193320854. The cubic root of 1369815552 is about 1110.5906960702.

The spelling of 1369815552 in words is "one billion, three hundred sixty-nine million, eight hundred fifteen thousand, five hundred fifty-two".