1055889905 has 32 divisors (see below), whose sum is σ = 1506186240. Its totient is φ = 695485440.

The previous prime is 1055889871. The next prime is 1055889943. The reversal of 1055889905 is 5099885501.

It is not a de Polignac number, because 1055889905 - 2¹⁸ = 1055627761 is a prime.

It is a super-2 number, since 2×1055889905² = 2229806982961818050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 97145 + ... + 107465.

It is an arithmetic number, because the mean of its divisors is an integer number (47068320).

Almost surely, 2^1055889905 is an apocalyptic number.

It is an amenable number.

1055889905 is a deficient number, since it is larger than the sum of its proper divisors (450296335).

1055889905 is a wasteful number, since it uses less digits than its factorization.

1055889905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10449.

The product of its (nonzero) digits is 648000, while the sum is 50.

The square root of 1055889905 is about 32494.4596046772. The cubic root of 1055889905 is about 1018.2932835305.

The spelling of 1055889905 in words is "one billion, fifty-five million, eight hundred eighty-nine thousand, nine hundred five".