1543454141 has 2 divisors, whose sum is σ = 1543454142. Its totient is φ = 1543454140.

The previous prime is 1543454131. The next prime is 1543454173. The reversal of 1543454141 is 1414543451.

It is an a-pointer prime, because the next prime (1543454173) can be obtained adding 1543454141 to its sum of digits (32).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1357922500 + 185531641 = 36850^2 + 13621^2 .

It is an emirp because it is prime and its reverse (1414543451) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1543454141 - 2¹⁴ = 1543437757 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1543454098 and 1543454107.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1543454131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 771727070 + 771727071.

It is an arithmetic number, because the mean of its divisors is an integer number (771727071).

Almost surely, 2^1543454141 is an apocalyptic number.

It is an amenable number.

1543454141 is a deficient number, since it is larger than the sum of its proper divisors (1).

1543454141 is an equidigital number, since it uses as much as digits as its factorization.

1543454141 is an evil number, because the sum of its binary digits is even.

The product of its digits is 19200, while the sum is 32.

The square root of 1543454141 is about 39286.8189218725. The cubic root of 1543454141 is about 1155.6630915665.

Adding to 1543454141 its reverse (1414543451), we get a palindrome (2957997592).

The spelling of 1543454141 in words is "one billion, five hundred forty-three million, four hundred fifty-four thousand, one hundred forty-one".