1081459905 has 16 divisors (see below), whose sum is σ = 1731170880. Its totient is φ = 576500288.

The previous prime is 1081459891. The next prime is 1081459919. The reversal of 1081459905 is 5099541801.

It is an interprime number because it is at equal distance from previous prime (1081459891) and next prime (1081459919).

It is a cyclic number.

It is not a de Polignac number, because 1081459905 - 2⁸ = 1081459649 is a prime.

It is a super-2 number, since 2×1081459905² = 2339111052245218050, which contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16906 + ... + 49484.

It is an arithmetic number, because the mean of its divisors is an integer number (108198180).

Almost surely, 2^1081459905 is an apocalyptic number.

1081459905 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1081459905 is a deficient number, since it is larger than the sum of its proper divisors (649710975).

1081459905 is a wasteful number, since it uses less digits than its factorization.

1081459905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34800.

The product of its (nonzero) digits is 64800, while the sum is 42.

The square root of 1081459905 is about 32885.5576963505. The cubic root of 1081459905 is about 1026.4476566041.

The spelling of 1081459905 in words is "one billion, eighty-one million, four hundred fifty-nine thousand, nine hundred five".