2148981 has 8 divisors (see below), whose sum is σ = 2926464. Its totient is φ = 1402080.

The previous prime is 2148947. The next prime is 2148983. The reversal of 2148981 is 1898412.

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

It is not a de Polignac number, because 2148981 - 2¹⁷ = 2017909 is a prime.

It is a super-2 number, since 2×2148981² = 9236238676722, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2148983) 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, 7480 + ... + 7761.

It is an arithmetic number, because the mean of its divisors is an integer number (365808).

2^2148981 is an apocalyptic number.

It is an amenable number.

2148981 is a deficient number, since it is larger than the sum of its proper divisors (777483).

2148981 is a wasteful number, since it uses less digits than its factorization.

2148981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15291.

The product of its digits is 4608, while the sum is 33.

The square root of 2148981 is about 1465.9403125639. The cubic root of 2148981 is about 129.0458943727.

The spelling of 2148981 in words is "two million, one hundred forty-eight thousand, nine hundred eighty-one".