1780136407830 has 64 divisors (see below), whose sum is σ = 4664602515456. Its totient is φ = 431188800000.

The previous prime is 1780136407811. The next prime is 1780136407837. The reversal of 1780136407830 is 387046310871.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1780136407830.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1780136407837) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 1849446 + ... + 2642105.

It is an arithmetic number, because the mean of its divisors is an integer number (72884414304).

Almost surely, 2^{1780136407830} is an apocalyptic number.

1780136407830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1780136407830 is an abundant number, since it is smaller than the sum of its proper divisors (2884466107626).

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

1780136407830 is a wasteful number, since it uses less digits than its factorization.

1780136407830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4492773.

The product of its (nonzero) digits is 677376, while the sum is 48.

The spelling of 1780136407830 in words is "one trillion, seven hundred eighty billion, one hundred thirty-six million, four hundred seven thousand, eight hundred thirty".