1063855653 has 32 divisors (see below), whose sum is σ = 1634304000. Its totient is φ = 602997696.

The previous prime is 1063855643. The next prime is 1063855711. The reversal of 1063855653 is 3565583601.

It is a happy number.

It is not a de Polignac number, because 1063855653 - 2⁵ = 1063855621 is a prime.

It is a super-2 number, since 2×1063855653² = 2263577700840112818, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1063855643) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2777500 + ... + 2777882.

It is an arithmetic number, because the mean of its divisors is an integer number (51072000).

Almost surely, 2^1063855653 is an apocalyptic number.

It is an amenable number.

1063855653 is a deficient number, since it is larger than the sum of its proper divisors (570448347).

1063855653 is a wasteful number, since it uses less digits than its factorization.

1063855653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1121.

The product of its (nonzero) digits is 324000, while the sum is 42.

The square root of 1063855653 is about 32616.8001649457. The cubic root of 1063855653 is about 1020.8475759749.

The spelling of 1063855653 in words is "one billion, sixty-three million, eight hundred fifty-five thousand, six hundred fifty-three".