1161321098 has 16 divisors (see below), whose sum is σ = 2009103360. Its totient is φ = 493142256.

The previous prime is 1161321079. The next prime is 1161321103. The reversal of 1161321098 is 8901231611.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 378986 + ... + 382037.

It is an arithmetic number, because the mean of its divisors is an integer number (125568960).

Almost surely, 2^1161321098 is an apocalyptic number.

1161321098 is a deficient number, since it is larger than the sum of its proper divisors (847782262).

1161321098 is a wasteful number, since it uses less digits than its factorization.

1161321098 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 761141.

The product of its (nonzero) digits is 2592, while the sum is 32.

The square root of 1161321098 is about 34078.1615994760. The cubic root of 1161321098 is about 1051.1163027343.

The spelling of 1161321098 in words is "one billion, one hundred sixty-one million, three hundred twenty-one thousand, ninety-eight".