2134992778 has 8 divisors (see below), whose sum is σ = 3203552772. Its totient is φ = 1067141856.

The previous prime is 2134992767. The next prime is 2134992823. The reversal of 2134992778 is 8772994312.

It can be written as a sum of positive squares in 2 ways, for example, as 2130468649 + 4524129 = 46157^2 + 2127^2 .

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

It is a super-2 number, since 2×2134992778² = 9116388324224314568, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 169675 + ... + 181822.

Almost surely, 2^2134992778 is an apocalyptic number.

2134992778 is a deficient number, since it is larger than the sum of its proper divisors (1068559994).

2134992778 is a wasteful number, since it uses less digits than its factorization.

2134992778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 354536.

The product of its digits is 1524096, while the sum is 52.

The square root of 2134992778 is about 46205.9820586036. The cubic root of 2134992778 is about 1287.6528796750.

The spelling of 2134992778 in words is "two billion, one hundred thirty-four million, nine hundred ninety-two thousand, seven hundred seventy-eight".