1382302921545 has 144 divisors (see below), whose sum is σ = 3002716538640. Its totient is φ = 583079067648.

The previous prime is 1382302921477. The next prime is 1382302921591. The reversal of 1382302921545 is 5451292032831.

1382302921545 is a `hidden beast` number, since 1 + 3 + 82 + 3 + 0 + 2 + 9 + 21 + 545 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 16216494336 + 1366086427209 = 127344^2 + 1168797^2 .

It is not a de Polignac number, because 1382302921545 - 2¹² = 1382302917449 is a prime.

It is a super-2 number, since 2×1382302921545² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 1382302921545.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 90831777 + ... + 90846993.

It is an arithmetic number, because the mean of its divisors is an integer number (20852198185).

Almost surely, 2^{1382302921545} is an apocalyptic number.

1382302921545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1382302921545 is an abundant number, since it is smaller than the sum of its proper divisors (1620413617095).

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

1382302921545 is a wasteful number, since it uses less digits than its factorization.

1382302921545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18424 (or 18414 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 45.

The spelling of 1382302921545 in words is "one trillion, three hundred eighty-two billion, three hundred two million, nine hundred twenty-one thousand, five hundred forty-five".