2494921720 has 16 divisors (see below), whose sum is σ = 5613573960. Its totient is φ = 997968672.

The previous prime is 2494921643. The next prime is 2494921721. The reversal of 2494921720 is 271294942.

It is a Harshad number since it is a multiple of its sum of digits (40), and also a Moran number because the ratio is a prime number: 62373043 = 2494921720 / (2 + 4 + 9 + 4 + 9 + 2 + 1 + 7 + 2 + 0).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2494921721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31186482 + ... + 31186561.

Almost surely, 2^2494921720 is an apocalyptic number.

2494921720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2494921720 is an abundant number, since it is smaller than the sum of its proper divisors (3118652240).

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

2494921720 is a wasteful number, since it uses less digits than its factorization.

2494921720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62373054 (or 62373050 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 40.

The square root of 2494921720 is about 49949.1913848463. The cubic root of 2494921720 is about 1356.2892138421.

The spelling of 2494921720 in words is "two billion, four hundred ninety-four million, nine hundred twenty-one thousand, seven hundred twenty".