1380452111 has 4 divisors (see below), whose sum is σ = 1440471792. Its totient is φ = 1320432432.

The previous prime is 1380452039. The next prime is 1380452137. The reversal of 1380452111 is 1112540831.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1112540831 = 31333 ⋅35507.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1380452111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1380472111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30009806 + ... + 30009851.

It is an arithmetic number, because the mean of its divisors is an integer number (360117948).

Almost surely, 2^1380452111 is an apocalyptic number.

1380452111 is a deficient number, since it is larger than the sum of its proper divisors (60019681).

1380452111 is an equidigital number, since it uses as much as digits as its factorization.

1380452111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60019680.

The product of its (nonzero) digits is 960, while the sum is 26.

The square root of 1380452111 is about 37154.4359531941. The cubic root of 1380452111 is about 1113.4578507530.

Adding to 1380452111 its reverse (1112540831), we get a palindrome (2492992942).

The spelling of 1380452111 in words is "one billion, three hundred eighty million, four hundred fifty-two thousand, one hundred eleven".