1328955498 has 60 divisors (see below), whose sum is σ = 3224596518. Its totient is φ = 408900960.

The previous prime is 1328955497. The next prime is 1328955517. The reversal of 1328955498 is 8945598231.

1328955498 is a `hidden beast` number, since 1 + 3 + 2 + 8 + 95 + 549 + 8 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 257506209 + 1071449289 = 16047^2 + 32733^2 .

It is a super-2 number, since 2×1328955498² = 3532245431328856008, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (1328955491) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 3108 + ... + 51648.

Almost surely, 2^1328955498 is an apocalyptic number.

1328955498 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1328955498, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1612298259).

1328955498 is an abundant number, since it is smaller than the sum of its proper divisors (1895641020).

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

1328955498 is a wasteful number, since it uses less digits than its factorization.

1328955498 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48581 (or 48559 counting only the distinct ones).

The product of its digits is 3110400, while the sum is 54.

The square root of 1328955498 is about 36454.8419006310. The cubic root of 1328955498 is about 1099.4364876795.

The spelling of 1328955498 in words is "one billion, three hundred twenty-eight million, nine hundred fifty-five thousand, four hundred ninety-eight".