1948644 has 24 divisors (see below), whose sum is σ = 5052320. Its totient is φ = 649512.

The previous prime is 1948637. The next prime is 1948649. The reversal of 1948644 is 4468491.

It is a happy number.

1948644 is a `hidden beast` number, since 1 + 9 + 4 + 8 + 644 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 1948599 and 1948608.

It is not an unprimeable number, because it can be changed into a prime (1948649) 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, 8914 + ... + 9129.

2^1948644 is an apocalyptic number.

It is an amenable number.

1948644 is an abundant number, since it is smaller than the sum of its proper divisors (3103676).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1948644 is a wasteful number, since it uses less digits than its factorization.

1948644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18056 (or 18048 counting only the distinct ones).

The product of its digits is 27648, while the sum is 36.

The square root of 1948644 is about 1395.9383940561. The cubic root of 1948644 is about 124.9043321333.

Subtracting from 1948644 its product of digits (27648), we obtain a square (1920996 = 1386²).

The spelling of 1948644 in words is "one million, nine hundred forty-eight thousand, six hundred forty-four".