1203664543 has 8 divisors (see below), whose sum is σ = 1256371200. Its totient is φ = 1150989048.

The previous prime is 1203664541. The next prime is 1203664591. The reversal of 1203664543 is 3454663021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1203664543 - 2¹ = 1203664541 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1203664499 and 1203664508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1203664541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 107818 + ... + 118456.

It is an arithmetic number, because the mean of its divisors is an integer number (157046400).

Almost surely, 2^1203664543 is an apocalyptic number.

1203664543 is a deficient number, since it is larger than the sum of its proper divisors (52706657).

1203664543 is a wasteful number, since it uses less digits than its factorization.

1203664543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15581.

The product of its (nonzero) digits is 51840, while the sum is 34.

The square root of 1203664543 is about 34693.8689540386. The cubic root of 1203664543 is about 1063.7391805042.

It can be divided in two parts, 120 and 3664543, that added together give a palindrome (3664663).

The spelling of 1203664543 in words is "one billion, two hundred three million, six hundred sixty-four thousand, five hundred forty-three".