1173051990 has 64 divisors (see below), whose sum is σ = 3412523520. Its totient is φ = 284375520.

The previous prime is 1173051967. The next prime is 1173052007. The reversal of 1173051990 is 991503711.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 194514 + ... + 200453.

It is an arithmetic number, because the mean of its divisors is an integer number (53320680).

Almost surely, 2^1173051990 is an apocalyptic number.

1173051990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1173051990 is an abundant number, since it is smaller than the sum of its proper divisors (2239471530).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1173051990 is a wasteful number, since it uses less digits than its factorization.

1173051990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 394994 (or 394988 counting only the distinct ones).

The product of its (nonzero) digits is 8505, while the sum is 36.

The square root of 1173051990 is about 34249.8465689994. The cubic root of 1173051990 is about 1054.6436777249.

The spelling of 1173051990 in words is "one billion, one hundred seventy-three million, fifty-one thousand, nine hundred ninety".