1162905990 has 48 divisors (see below), whose sum is σ = 2917636848. Its totient is φ = 296621248.

The previous prime is 1162905979. The next prime is 1162906049. The reversal of 1162905990 is 995092611.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20769 + ... + 52508.

It is an arithmetic number, because the mean of its divisors is an integer number (60784101).

Almost surely, 2^1162905990 is an apocalyptic number.

1162905990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1162905990 is an abundant number, since it is smaller than the sum of its proper divisors (1754730858).

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

1162905990 is a wasteful number, since it uses less digits than its factorization.

1162905990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73333 (or 73310 counting only the distinct ones).

The product of its (nonzero) digits is 43740, while the sum is 42.

The square root of 1162905990 is about 34101.4074489602. The cubic root of 1162905990 is about 1051.5942493757.

The spelling of 1162905990 in words is "one billion, one hundred sixty-two million, nine hundred five thousand, nine hundred ninety".