1380933638452 has 6 divisors (see below), whose sum is σ = 2416633867298. Its totient is φ = 690466819224.

The previous prime is 1380933638423. The next prime is 1380933638467. The reversal of 1380933638452 is 2548363390831.

It can be written as a sum of positive squares in only one way, i.e., 1180969052176 + 199964586276 = 1086724^2 + 447174^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1380933638393 and 1380933638402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172616704803 + ... + 172616704810.

Almost surely, 2^{1380933638452} is an apocalyptic number.

It is an amenable number.

1380933638452 is a deficient number, since it is larger than the sum of its proper divisors (1035700228846).

1380933638452 is a wasteful number, since it uses less digits than its factorization.

1380933638452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345233409617 (or 345233409615 counting only the distinct ones).

The product of its (nonzero) digits is 11197440, while the sum is 55.

The spelling of 1380933638452 in words is "one trillion, three hundred eighty billion, nine hundred thirty-three million, six hundred thirty-eight thousand, four hundred fifty-two".