1156010805 has 16 divisors (see below), whose sum is σ = 2055130560. Its totient is φ = 616539024.

The previous prime is 1156010771. The next prime is 1156010827. The reversal of 1156010805 is 5080106511.

1156010805 is a `hidden beast` number, since 11 + 560 + 10 + 80 + 5 = 666.

It is not a de Polignac number, because 1156010805 - 2⁶ = 1156010741 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent 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, 4281387 + ... + 4281656.

It is an arithmetic number, because the mean of its divisors is an integer number (128445660).

Almost surely, 2^1156010805 is an apocalyptic number.

1156010805 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1156010805 is a deficient number, since it is larger than the sum of its proper divisors (899119755).

1156010805 is an equidigital number, since it uses as much as digits as its factorization.

1156010805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8563057 (or 8563051 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 27.

The square root of 1156010805 is about 34000.1588966875. The cubic root of 1156010805 is about 1049.5117321660.

The spelling of 1156010805 in words is "one billion, one hundred fifty-six million, ten thousand, eight hundred five".