2449787978 has 8 divisors (see below), whose sum is σ = 4008744000. Its totient is φ = 1113539980.

The previous prime is 2449787969. The next prime is 2449788013. The reversal of 2449787978 is 8797879442.

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

It is a super-2 number, since 2×2449787978² = 12002922274306656968, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55676978 + ... + 55677021.

It is an arithmetic number, because the mean of its divisors is an integer number (501093000).

Almost surely, 2^2449787978 is an apocalyptic number.

2449787978 is a deficient number, since it is larger than the sum of its proper divisors (1558956022).

2449787978 is a wasteful number, since it uses less digits than its factorization.

2449787978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111354012.

The product of its digits is 56899584, while the sum is 65.

The square root of 2449787978 is about 49495.3328910919. The cubic root of 2449787978 is about 1348.0608607654.

The spelling of 2449787978 in words is "two billion, four hundred forty-nine million, seven hundred eighty-seven thousand, nine hundred seventy-eight".