1098149328 has 60 divisors (see below), whose sum is σ = 3123699748. Its totient is φ = 360046080.

The previous prime is 1098149321. The next prime is 1098149387. The reversal of 1098149328 is 8239418901.

It can be written as a sum of positive squares in 2 ways, for example, as 43718544 + 1054430784 = 6612^2 + 32472^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1098149321) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 53725 + ... + 71292.

Almost surely, 2^1098149328 is an apocalyptic number.

1098149328 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1098149328 is an abundant number, since it is smaller than the sum of its proper divisors (2025550420).

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

1098149328 is a wasteful number, since it uses less digits than its factorization.

1098149328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125092 (or 125083 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 45.

The square root of 1098149328 is about 33138.3362286039. The cubic root of 1098149328 is about 1031.7008777940.

It can be divided in two parts, 1098 and 149328, that added together give a triangular number (150426 = T₅₄₈).

The spelling of 1098149328 in words is "one billion, ninety-eight million, one hundred forty-nine thousand, three hundred twenty-eight".