1063641405 has 16 divisors (see below), whose sum is σ = 1747822464. Its totient is φ = 551943360.

The previous prime is 1063641389. The next prime is 1063641407. The reversal of 1063641405 is 5041463601.

It is not a de Polignac number, because 1063641405 - 2⁴ = 1063641389 is a prime.

It is a super-2 number, since 2×1063641405² = 2262666076860748050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1063641407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 957681 + ... + 958790.

It is an arithmetic number, because the mean of its divisors is an integer number (109238904).

Almost surely, 2^1063641405 is an apocalyptic number.

1063641405 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1063641405 is a deficient number, since it is larger than the sum of its proper divisors (684181059).

1063641405 is a wasteful number, since it uses less digits than its factorization.

1063641405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1916516.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 1063641405 is about 32613.5156798527. The cubic root of 1063641405 is about 1020.7790424808.

The spelling of 1063641405 in words is "one billion, sixty-three million, six hundred forty-one thousand, four hundred five".