1098129612 has 12 divisors (see below), whose sum is σ = 2562302456. Its totient is φ = 366043200.

The previous prime is 1098129611. The next prime is 1098129629. The reversal of 1098129612 is 2169218901.

It is a tau number, because it is divible by the number of its divisors (12).

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (1098129611) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 45755389 + ... + 45755412.

Almost surely, 2^1098129612 is an apocalyptic number.

1098129612 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1098129612 is an abundant number, since it is smaller than the sum of its proper divisors (1464172844).

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

1098129612 is a wasteful number, since it uses less digits than its factorization.

1098129612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91510808 (or 91510806 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 39.

The square root of 1098129612 is about 33138.0387470351. The cubic root of 1098129612 is about 1031.6947034254.

The spelling of 1098129612 in words is "one billion, ninety-eight million, one hundred twenty-nine thousand, six hundred twelve".