6940191026 has 4 divisors (see below), whose sum is σ = 10410286542. Its totient is φ = 3470095512.

The previous prime is 6940191007. The next prime is 6940191067. The reversal of 6940191026 is 6201910496.

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., 4246477225 + 2693713801 = 65165^2 + 51901^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1735047755 + ... + 1735047758.

Almost surely, 2^6940191026 is an apocalyptic number.

6940191026 is a deficient number, since it is larger than the sum of its proper divisors (3470095516).

6940191026 is a wasteful number, since it uses less digits than its factorization.

6940191026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3470095515.

The product of its (nonzero) digits is 23328, while the sum is 38.

The square root of 6940191026 is about 83307.8089136907. The cubic root of 6940191026 is about 1907.4674754762.

The spelling of 6940191026 in words is "six billion, nine hundred forty million, one hundred ninety-one thousand, twenty-six".