1098861148 has 48 divisors (see below), whose sum is σ = 2402152704. Its totient is φ = 427299840.

The previous prime is 1098861139. The next prime is 1098861161. The reversal of 1098861148 is 8411688901.

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 1098861098 and 1098861107.

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, 170236 + ... + 176572.

It is an arithmetic number, because the mean of its divisors is an integer number (50044848).

Almost surely, 2^1098861148 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1098861148, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1201076352).

1098861148 is an abundant number, since it is smaller than the sum of its proper divisors (1303291556).

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

1098861148 is a wasteful number, since it uses less digits than its factorization.

1098861148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6922 (or 6920 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 46.

The square root of 1098861148 is about 33149.0746175515. The cubic root of 1098861148 is about 1031.9237456928.

The spelling of 1098861148 in words is "one billion, ninety-eight million, eight hundred sixty-one thousand, one hundred forty-eight".