2492216978 has 4 divisors (see below), whose sum is σ = 3738325470. Its totient is φ = 1246108488.

The previous prime is 2492216977. The next prime is 2492216981. The reversal of 2492216978 is 8796122942.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 2418377329 + 73839649 = 49177^2 + 8593^2 .

It is a super-2 number, since 2×2492216978² = 12422290930862904968, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2492216977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 623054243 + ... + 623054246.

Almost surely, 2^2492216978 is an apocalyptic number.

2492216978 is a deficient number, since it is larger than the sum of its proper divisors (1246108492).

2492216978 is a wasteful number, since it uses less digits than its factorization.

2492216978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1246108491.

The product of its digits is 870912, while the sum is 50.

The square root of 2492216978 is about 49922.1091100927. The cubic root of 2492216978 is about 1355.7989193890.

The spelling of 2492216978 in words is "two billion, four hundred ninety-two million, two hundred sixteen thousand, nine hundred seventy-eight".