1098097090 has 16 divisors (see below), whose sum is σ = 1982244600. Its totient is φ = 437978880.

The previous prime is 1098097067. The next prime is 1098097123. The reversal of 1098097090 is 907908901.

It can be written as a sum of positive squares in 4 ways, for example, as 789778609 + 308318481 = 28103^2 + 17559^2 .

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, 153831 + ... + 160810.

Almost surely, 2^1098097090 is an apocalyptic number.

1098097090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1098097090 is a deficient number, since it is larger than the sum of its proper divisors (884147510).

1098097090 is a wasteful number, since it uses less digits than its factorization.

1098097090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314997.

The product of its (nonzero) digits is 40824, while the sum is 43.

The square root of 1098097090 is about 33137.5480384412. The cubic root of 1098097090 is about 1031.6845184994.

The spelling of 1098097090 in words is "one billion, ninety-eight million, ninety-seven thousand, ninety".