7953919418 has 4 divisors (see below), whose sum is σ = 11930879130. Its totient is φ = 3976959708.

The previous prime is 7953919411. The next prime is 7953919429. The reversal of 7953919418 is 8149193597.

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., 7909789969 + 44129449 = 88937^2 + 6643^2 .

It is not an unprimeable number, because it can be changed into a prime (7953919411) by changing a digit.

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 as a sum of consecutive naturals, namely, 1988479853 + ... + 1988479856.

Almost surely, 2^7953919418 is an apocalyptic number.

7953919418 is a deficient number, since it is larger than the sum of its proper divisors (3976959712).

7953919418 is a wasteful number, since it uses less digits than its factorization.

7953919418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3976959711.

The product of its digits is 2449440, while the sum is 56.

The square root of 7953919418 is about 89184.7487970897. The cubic root of 7953919418 is about 1996.1525548289.

The spelling of 7953919418 in words is "seven billion, nine hundred fifty-three million, nine hundred nineteen thousand, four hundred eighteen".