1098090870 has 32 divisors (see below), whose sum is σ = 2649087072. Its totient is φ = 291305472.

The previous prime is 1098090859. The next prime is 1098090881. The reversal of 1098090870 is 780908901.

It is an interprime number because it is at equal distance from previous prime (1098090859) and next prime (1098090881).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 89037 + ... + 100616.

It is an arithmetic number, because the mean of its divisors is an integer number (82783971).

Almost surely, 2^1098090870 is an apocalyptic number.

1098090870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1098090870 is an abundant number, since it is smaller than the sum of its proper divisors (1550996202).

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

1098090870 is a wasteful number, since it uses less digits than its factorization.

1098090870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189856.

The product of its (nonzero) digits is 36288, while the sum is 42.

The square root of 1098090870 is about 33137.4541870675. The cubic root of 1098090870 is about 1031.6825705569.

The spelling of 1098090870 in words is "one billion, ninety-eight million, ninety thousand, eight hundred seventy".