3126778994 has 8 divisors (see below), whose sum is σ = 4691552940. Its totient is φ = 1562928016.

The previous prime is 3126778979. The next prime is 3126779003. The reversal of 3126778994 is 4998776213.

It can be written as a sum of positive squares in 2 ways, for example, as 3094140625 + 32638369 = 55625^2 + 5713^2 .

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

It is an unprimeable number.

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, 222209 + ... + 235860.

Almost surely, 2^3126778994 is an apocalyptic number.

3126778994 is a deficient number, since it is larger than the sum of its proper divisors (1564773946).

3126778994 is a wasteful number, since it uses less digits than its factorization.

3126778994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 461484.

The product of its digits is 4572288, while the sum is 56.

The square root of 3126778994 is about 55917.6089796408. The cubic root of 3126778994 is about 1462.2862463455.

The spelling of 3126778994 in words is "three billion, one hundred twenty-six million, seven hundred seventy-eight thousand, nine hundred ninety-four".