1880720673 has 16 divisors (see below), whose sum is σ = 2793645120. Its totient is φ = 1117456704.

The previous prime is 1880720671. The next prime is 1880720687. The reversal of 1880720673 is 3760270881.

It is not a de Polignac number, because 1880720673 - 2¹ = 1880720671 is a prime.

It is a super-2 number, since 2×1880720673² = 7074220499699145858, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1880720671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 830311 + ... + 832572.

It is an arithmetic number, because the mean of its divisors is an integer number (174602820).

Almost surely, 2^1880720673 is an apocalyptic number.

1880720673 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1880720673 is a deficient number, since it is larger than the sum of its proper divisors (912924447).

1880720673 is a wasteful number, since it uses less digits than its factorization.

1880720673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1662928.

The product of its (nonzero) digits is 112896, while the sum is 42.

The square root of 1880720673 is about 43367.2765227424. The cubic root of 1880720673 is about 1234.3588432756.

The spelling of 1880720673 in words is "one billion, eight hundred eighty million, seven hundred twenty thousand, six hundred seventy-three".