2449801620 has 72 divisors (see below), whose sum is σ = 8492649984. Its totient is φ = 559954368.

The previous prime is 2449801597. The next prime is 2449801621. The reversal of 2449801620 is 261089442.

2449801620 is a `hidden beast` number, since 2 + 4 + 498 + 0 + 162 + 0 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2449801621) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 970884 + ... + 973403.

It is an arithmetic number, because the mean of its divisors is an integer number (117953472).

Almost surely, 2^2449801620 is an apocalyptic number.

2449801620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2449801620 is an abundant number, since it is smaller than the sum of its proper divisors (6042848364).

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

2449801620 is a wasteful number, since it uses less digits than its factorization.

2449801620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1944309 (or 1944304 counting only the distinct ones).

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

The square root of 2449801620 is about 49495.4707018733. The cubic root of 2449801620 is about 1348.0633630516.

The spelling of 2449801620 in words is "two billion, four hundred forty-nine million, eight hundred one thousand, six hundred twenty".