1780974328530 has 32 divisors (see below), whose sum is σ = 4332890974464. Its totient is φ = 468420644736.

The previous prime is 1780974328519. The next prime is 1780974328541. The reversal of 1780974328530 is 358234790871.

It is an interprime number because it is at equal distance from previous prime (1780974328519) and next prime (1780974328541).

It is a super-4 number, since 4×1780974328530⁴ (a number of 50 digits) contains 4444 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 406612954 + ... + 406617333.

It is an arithmetic number, because the mean of its divisors is an integer number (135402842952).

Almost surely, 2^{1780974328530} is an apocalyptic number.

1780974328530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1780974328530 is an abundant number, since it is smaller than the sum of its proper divisors (2551916645934).

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

1780974328530 is a wasteful number, since it uses less digits than its factorization.

1780974328530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 813230370.

The product of its (nonzero) digits is 10160640, while the sum is 57.

The spelling of 1780974328530 in words is "one trillion, seven hundred eighty billion, nine hundred seventy-four million, three hundred twenty-eight thousand, five hundred thirty".