1098135280 has 40 divisors (see below), whose sum is σ = 2785272624. Its totient is φ = 399321600.

The previous prime is 1098135251. The next prime is 1098135301. The reversal of 1098135280 is 825318901.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 623061 + ... + 624820.

Almost surely, 2^1098135280 is an apocalyptic number.

1098135280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1098135280 is an abundant number, since it is smaller than the sum of its proper divisors (1687137344).

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

1098135280 is a wasteful number, since it uses less digits than its factorization.

1098135280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1247905 (or 1247899 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 37.

The square root of 1098135280 is about 33138.1242679787. The cubic root of 1098135280 is about 1031.6964784543.

The spelling of 1098135280 in words is "one billion, ninety-eight million, one hundred thirty-five thousand, two hundred eighty".