1183881 has 8 divisors (see below), whose sum is σ = 1584544. Its totient is φ = 786240.

The previous prime is 1183877. The next prime is 1183913. The reversal of 1183881 is 1883811.

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

It is not a de Polignac number, because 1183881 - 2² = 1183877 is a prime.

It is a super-2 number, since 2×1183881² = 2803148444322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1183811) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 426 + ... + 1596.

It is an arithmetic number, because the mean of its divisors is an integer number (198068).

2^1183881 is an apocalyptic number.

It is an amenable number.

1183881 is a deficient number, since it is larger than the sum of its proper divisors (400663).

1183881 is a wasteful number, since it uses less digits than its factorization.

1183881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1511.

The product of its digits is 1536, while the sum is 30.

The square root of 1183881 is about 1088.0629577373. The cubic root of 1183881 is about 105.7879050833.

The spelling of 1183881 in words is "one million, one hundred eighty-three thousand, eight hundred eighty-one".