1984501 has 4 divisors (see below), whose sum is σ = 2003872. Its totient is φ = 1965132.

The previous prime is 1984471. The next prime is 1984511. The reversal of 1984501 is 1054891.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1054891 = 523 ⋅2017.

It is a cyclic number.

It is not a de Polignac number, because 1984501 - 2¹³ = 1976309 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1984501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1984511) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9531 + ... + 9736.

It is an arithmetic number, because the mean of its divisors is an integer number (500968).

2^1984501 is an apocalyptic number.

It is an amenable number.

1984501 is a deficient number, since it is larger than the sum of its proper divisors (19371).

1984501 is a wasteful number, since it uses less digits than its factorization.

1984501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19370.

The product of its (nonzero) digits is 1440, while the sum is 28.

The square root of 1984501 is about 1408.7231807562. The cubic root of 1984501 is about 125.6658020315.

It can be divided in two parts, 1984 and 501, that added together give a triangular number (2485 = T₇₀).

The spelling of 1984501 in words is "one million, nine hundred eighty-four thousand, five hundred one".