2148645 has 8 divisors (see below), whose sum is σ = 3437856. Its totient is φ = 1145936.

The previous prime is 2148631. The next prime is 2148649. The reversal of 2148645 is 5468412.

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 2148645 - 2¹⁵ = 2115877 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2148649) 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, 71607 + ... + 71636.

It is an arithmetic number, because the mean of its divisors is an integer number (429732).

2^2148645 is an apocalyptic number.

It is an amenable number.

2148645 is a deficient number, since it is larger than the sum of its proper divisors (1289211).

2148645 is a wasteful number, since it uses less digits than its factorization.

2148645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143251.

The product of its digits is 7680, while the sum is 30.

The square root of 2148645 is about 1465.8257058737. The cubic root of 2148645 is about 129.0391684437.

The spelling of 2148645 in words is "two million, one hundred forty-eight thousand, six hundred forty-five".