1098653850 has 72 divisors (see below), whose sum is σ = 3373400160. Its totient is φ = 251120160.

The previous prime is 1098653813. The next prime is 1098653863. The reversal of 1098653850 is 583568901.

1098653850 is a `hidden beast` number, since 109 + 8 + 6 + 538 + 5 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1098653796 and 1098653805.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 171240 + ... + 177539.

It is an arithmetic number, because the mean of its divisors is an integer number (46852780).

Almost surely, 2^1098653850 is an apocalyptic number.

1098653850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1098653850 is an abundant number, since it is smaller than the sum of its proper divisors (2274746310).

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

1098653850 is a wasteful number, since it uses less digits than its factorization.

1098653850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 348804 (or 348796 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 45.

The square root of 1098653850 is about 33145.9477161236. The cubic root of 1098653850 is about 1031.8588514818.

The spelling of 1098653850 in words is "one billion, ninety-eight million, six hundred fifty-three thousand, eight hundred fifty".