1908641 has 16 divisors (see below), whose sum is σ = 2369664. Its totient is φ = 1499904.

The previous prime is 1908631. The next prime is 1908659. The reversal of 1908641 is 1468091.

It is not a de Polignac number, because 1908641 - 2¹⁰ = 1907617 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1908601) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4931 + ... + 5303.

It is an arithmetic number, because the mean of its divisors is an integer number (148104).

2^1908641 is an apocalyptic number.

It is an amenable number.

1908641 is a deficient number, since it is larger than the sum of its proper divisors (461023).

1908641 is a wasteful number, since it uses less digits than its factorization.

1908641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 440.

The product of its (nonzero) digits is 1728, while the sum is 29.

The square root of 1908641 is about 1381.5357396752. The cubic root of 1908641 is about 124.0437107432.

The spelling of 1908641 in words is "one million, nine hundred eight thousand, six hundred forty-one".