1881396273 has 8 divisors (see below), whose sum is σ = 2656088928. Its totient is φ = 1180483904.

The previous prime is 1881396227. The next prime is 1881396277. The reversal of 1881396273 is 3726931881.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1881396273 - 2¹⁴ = 1881379889 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1881396277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18445011 + ... + 18445112.

It is an arithmetic number, because the mean of its divisors is an integer number (332011116).

Almost surely, 2^1881396273 is an apocalyptic number.

It is an amenable number.

1881396273 is a deficient number, since it is larger than the sum of its proper divisors (774692655).

1881396273 is a wasteful number, since it uses less digits than its factorization.

1881396273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36890143.

The product of its digits is 435456, while the sum is 48.

The square root of 1881396273 is about 43375.0651065794. The cubic root of 1881396273 is about 1234.5066293539.

The spelling of 1881396273 in words is "one billion, eight hundred eighty-one million, three hundred ninety-six thousand, two hundred seventy-three".