881920919 has 4 divisors (see below), whose sum is σ = 962095560. Its totient is φ = 801746280.

The previous prime is 881920913. The next prime is 881920931. The reversal of 881920919 is 919029188.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 881920919 - 2¹² = 881916823 is a prime.

It is a super-2 number, since 2×881920919² = 1555569014739609122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (881920913) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40087304 + ... + 40087325.

It is an arithmetic number, because the mean of its divisors is an integer number (240523890).

Almost surely, 2^881920919 is an apocalyptic number.

881920919 is a deficient number, since it is larger than the sum of its proper divisors (80174641).

881920919 is a wasteful number, since it uses less digits than its factorization.

881920919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80174640.

The product of its (nonzero) digits is 93312, while the sum is 47.

The square root of 881920919 is about 29697.1533821004. The cubic root of 881920919 is about 958.9807320625.

The spelling of 881920919 in words is "eight hundred eighty-one million, nine hundred twenty thousand, nine hundred nineteen".