1872630770481 has 21 divisors (see below), whose sum is σ = 2807717170089. Its totient is φ = 1248395881716.

The previous prime is 1872630770459. The next prime is 1872630770509. The reversal of 1872630770481 is 1840770362781.

The square root of 1872630770481 is 1368441.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 1872630770481 - 2¹⁷ = 1872630639409 is a prime.

It is a super-2 number, since 2×1872630770481² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1872630770401) by changing a digit.

It is a polite number, since it can be written in 20 ways as a sum of consecutive naturals, for example, 36922566 + ... + 36973248.

Almost surely, 2^{1872630770481} is an apocalyptic number.

1872630770481 is the 1368441-st square number.

1872630770481 is the 684221-st centered octagonal number.

It is an amenable number.

1872630770481 is a deficient number, since it is larger than the sum of its proper divisors (935086399608).

1872630770481 is an frugal number, since it uses more digits than its factorization.

1872630770481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101384 (or 50686 counting only the distinct ones).

The product of its (nonzero) digits is 3161088, while the sum is 54.

The spelling of 1872630770481 in words is "one trillion, eight hundred seventy-two billion, six hundred thirty million, seven hundred seventy thousand, four hundred eighty-one".