1098734250 has 64 divisors (see below), whose sum is σ = 2749189248. Its totient is φ = 292275200.

The previous prime is 1098734239. The next prime is 1098734341. The reversal of 1098734250 is 524378901.

It is a junction number, because it is equal to n+sod(n) for n = 1098734199 and 1098734208.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 348682 + ... + 351818.

It is an arithmetic number, because the mean of its divisors is an integer number (42956082).

Almost surely, 2^1098734250 is an apocalyptic number.

1098734250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1098734250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1374594624).

1098734250 is an abundant number, since it is smaller than the sum of its proper divisors (1650454998).

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

1098734250 is a wasteful number, since it uses less digits than its factorization.

1098734250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3624 (or 3614 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 39.

The square root of 1098734250 is about 33147.1605118749. The cubic root of 1098734250 is about 1031.8840215048.

The spelling of 1098734250 in words is "one billion, ninety-eight million, seven hundred thirty-four thousand, two hundred fifty".