2485478021 has 8 divisors (see below), whose sum is σ = 2681145600. Its totient is φ = 2290450032.

The previous prime is 2485477999. The next prime is 2485478143. The reversal of 2485478021 is 1208745842.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-2485478021 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 2485478021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2485478621) 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, 151805 + ... + 167378.

It is an arithmetic number, because the mean of its divisors is an integer number (335143200).

Almost surely, 2^2485478021 is an apocalyptic number.

It is an amenable number.

2485478021 is a deficient number, since it is larger than the sum of its proper divisors (195667579).

2485478021 is a wasteful number, since it uses less digits than its factorization.

2485478021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319795.

The product of its (nonzero) digits is 143360, while the sum is 41.

The square root of 2485478021 is about 49854.5687073913. The cubic root of 2485478021 is about 1354.5757891023.

The spelling of 2485478021 in words is "two billion, four hundred eighty-five million, four hundred seventy-eight thousand, twenty-one".