7961918 has 8 divisors (see below), whose sum is σ = 12034440. Its totient is φ = 3950440.

The previous prime is 7961881. The next prime is 7961929. The reversal of 7961918 is 8191697.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14933 + ... + 15456.

It is an arithmetic number, because the mean of its divisors is an integer number (1504305).

Almost surely, 2^7961918 is an apocalyptic number.

7961918 is a deficient number, since it is larger than the sum of its proper divisors (4072522).

7961918 is a wasteful number, since it uses less digits than its factorization.

7961918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30522.

The product of its digits is 27216, while the sum is 41.

The square root of 7961918 is about 2821.6870839978. The cubic root of 7961918 is about 199.6821451090.

The spelling of 7961918 in words is "seven million, nine hundred sixty-one thousand, nine hundred eighteen".