1438202082645 has 24 divisors (see below), whose sum is σ = 2624088012000. Its totient is φ = 726670525536.

The previous prime is 1438202082643. The next prime is 1438202082719. The reversal of 1438202082645 is 5462802028341.

1438202082645 is a `hidden beast` number, since 1 + 4 + 382 + 0 + 2 + 0 + 8 + 264 + 5 = 666.

It is not a de Polignac number, because 1438202082645 - 2¹ = 1438202082643 is a prime.

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 1438202082645.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1438202082643) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 841052995 + ... + 841054704.

It is an arithmetic number, because the mean of its divisors is an integer number (109337000500).

Almost surely, 2^{1438202082645} is an apocalyptic number.

1438202082645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1438202082645 is a deficient number, since it is larger than the sum of its proper divisors (1185885929355).

1438202082645 is a wasteful number, since it uses less digits than its factorization.

1438202082645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1682107729 (or 1682107726 counting only the distinct ones).

The product of its (nonzero) digits is 737280, while the sum is 45.

The spelling of 1438202082645 in words is "one trillion, four hundred thirty-eight billion, two hundred two million, eighty-two thousand, six hundred forty-five".