1171055090 has 16 divisors (see below), whose sum is σ = 2180585880. Its totient is φ = 452269440.

The previous prime is 1171055089. The next prime is 1171055113. The reversal of 1171055090 is 905501711.

It can be written as a sum of positive squares in 4 ways, for example, as 694375201 + 476679889 = 26351^2 + 21833^2 .

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2018771 + ... + 2019350.

Almost surely, 2^1171055090 is an apocalyptic number.

1171055090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1171055090 is a deficient number, since it is larger than the sum of its proper divisors (1009530790).

1171055090 is a wasteful number, since it uses less digits than its factorization.

1171055090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4038157.

The product of its (nonzero) digits is 1575, while the sum is 29.

The square root of 1171055090 is about 34220.6821965898. The cubic root of 1171055090 is about 1054.0448937715.

The spelling of 1171055090 in words is "one billion, one hundred seventy-one million, fifty-five thousand, ninety".