19500485 has 4 divisors (see below), whose sum is σ = 23400588. Its totient is φ = 15600384.

The previous prime is 19500473. The next prime is 19500493. The reversal of 19500485 is 58400591.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 58400591 = 3209 ⋅18199.

It can be written as a sum of positive squares in 2 ways, for example, as 10252804 + 9247681 = 3202^2 + 3041^2 .

It is a cyclic number.

It is not a de Polignac number, because 19500485 - 2¹⁶ = 19434949 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1950044 + ... + 1950053.

It is an arithmetic number, because the mean of its divisors is an integer number (5850147).

Almost surely, 2^19500485 is an apocalyptic number.

It is an amenable number.

19500485 is a deficient number, since it is larger than the sum of its proper divisors (3900103).

19500485 is an equidigital number, since it uses as much as digits as its factorization.

19500485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3900102.

The product of its (nonzero) digits is 7200, while the sum is 32.

The square root of 19500485 is about 4415.9353482586. The cubic root of 19500485 is about 269.1628620885.

The spelling of 19500485 in words is "nineteen million, five hundred thousand, four hundred eighty-five".