1380554543 has 4 divisors (see below), whose sum is σ = 1384316640. Its totient is φ = 1376792448.

The previous prime is 1380554531. The next prime is 1380554569. The reversal of 1380554543 is 3454550831.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1380554543 - 2¹² = 1380550447 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1380554497 and 1380554506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1380554143) 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, 1880498 + ... + 1881231.

It is an arithmetic number, because the mean of its divisors is an integer number (346079160).

Almost surely, 2^1380554543 is an apocalyptic number.

1380554543 is a deficient number, since it is larger than the sum of its proper divisors (3762097).

1380554543 is an equidigital number, since it uses as much as digits as its factorization.

1380554543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3762096.

The product of its (nonzero) digits is 144000, while the sum is 38.

The square root of 1380554543 is about 37155.8143902135. The cubic root of 1380554543 is about 1113.4853902557.

The spelling of 1380554543 in words is "one billion, three hundred eighty million, five hundred fifty-four thousand, five hundred forty-three".