1871326730 has 32 divisors (see below), whose sum is σ = 4145710464. Its totient is φ = 592243776.

The previous prime is 1871326729. The next prime is 1871326733. The reversal of 1871326730 is 376231781.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (1871326733) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1027292 + ... + 1029111.

It is an arithmetic number, because the mean of its divisors is an integer number (129553452).

Almost surely, 2^1871326730 is an apocalyptic number.

1871326730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1871326730 is an abundant number, since it is smaller than the sum of its proper divisors (2274383734).

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

1871326730 is a wasteful number, since it uses less digits than its factorization.

1871326730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2056430.

The product of its (nonzero) digits is 42336, while the sum is 38.

The square root of 1871326730 is about 43258.8341266845. The cubic root of 1871326730 is about 1232.3002607141.

The spelling of 1871326730 in words is "one billion, eight hundred seventy-one million, three hundred twenty-six thousand, seven hundred thirty".