1798396530 has 192 divisors, whose sum is σ = 5249639808. Its totient is φ = 392770560.

The previous prime is 1798396511. The next prime is 1798396543. The reversal of 1798396530 is 356938971.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 3194029 + ... + 3194591.

It is an arithmetic number, because the mean of its divisors is an integer number (27341874).

Almost surely, 2^1798396530 is an apocalyptic number.

1798396530 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 1798396530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2624819904).

1798396530 is an abundant number, since it is smaller than the sum of its proper divisors (3451243278).

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

1798396530 is a wasteful number, since it uses less digits than its factorization.

1798396530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 681 (or 674 counting only the distinct ones).

The product of its (nonzero) digits is 1224720, while the sum is 51.

The square root of 1798396530 is about 42407.5055856861. The cubic root of 1798396530 is about 1216.0790833442.

The spelling of 1798396530 in words is "one billion, seven hundred ninety-eight million, three hundred ninety-six thousand, five hundred thirty".