1063543261 has 8 divisors (see below), whose sum is σ = 1162116864. Its totient is φ = 965284320.

The previous prime is 1063543241. The next prime is 1063543279. The reversal of 1063543261 is 1623453601.

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

It is not a de Polignac number, because 1063543261 - 2⁹ = 1063542749 is a prime.

It is a super-2 number, since 2×1063543261² = 2262248536037028242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1063543241) 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, 71565 + ... + 85138.

It is an arithmetic number, because the mean of its divisors is an integer number (145264608).

Almost surely, 2^1063543261 is an apocalyptic number.

1063543261 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1063543261 is a deficient number, since it is larger than the sum of its proper divisors (98573603).

1063543261 is a wasteful number, since it uses less digits than its factorization.

1063543261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157331.

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 1063543261 is about 32612.0109928842. The cubic root of 1063543261 is about 1020.7476451761.

Adding to 1063543261 its reverse (1623453601), we get a palindrome (2686996862).

The spelling of 1063543261 in words is "one billion, sixty-three million, five hundred forty-three thousand, two hundred sixty-one".