1098040994 has 8 divisors (see below), whose sum is σ = 1649947728. Its totient is φ = 548058420.

The previous prime is 1098040943. The next prime is 1098040997. The reversal of 1098040994 is 4990408901.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (1098040997) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 479612 + ... + 481895.

It is an arithmetic number, because the mean of its divisors is an integer number (206243466).

Almost surely, 2^1098040994 is an apocalyptic number.

1098040994 is a deficient number, since it is larger than the sum of its proper divisors (551906734).

1098040994 is an equidigital number, since it uses as much as digits as its factorization.

1098040994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 962080.

The product of its (nonzero) digits is 93312, while the sum is 44.

The square root of 1098040994 is about 33136.7016161838. The cubic root of 1098040994 is about 1031.6669504231. Note that the first 3 decimals are identical.

The spelling of 1098040994 in words is "one billion, ninety-eight million, forty thousand, nine hundred ninety-four".