6926905978 has 4 divisors (see below), whose sum is σ = 10390358970. Its totient is φ = 3463452988.

The previous prime is 6926905963. The next prime is 6926906023. The reversal of 6926905978 is 8795096296.

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., 6782016609 + 144889369 = 82353^2 + 12037^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1731726493 + ... + 1731726496.

Almost surely, 2^6926905978 is an apocalyptic number.

6926905978 is a deficient number, since it is larger than the sum of its proper divisors (3463452992).

6926905978 is a wasteful number, since it uses less digits than its factorization.

6926905978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3463452991.

The product of its (nonzero) digits is 14696640, while the sum is 61.

The square root of 6926905978 is about 83228.0360095082. The cubic root of 6926905978 is about 1906.2495943269.

The spelling of 6926905978 in words is "six billion, nine hundred twenty-six million, nine hundred five thousand, nine hundred seventy-eight".