7940518469 has 8 divisors (see below), whose sum is σ = 8571645432. Its totient is φ = 7312294080.

The previous prime is 7940518441. The next prime is 7940518477. The reversal of 7940518469 is 9648150497.

It can be written as a sum of positive squares in 4 ways, for example, as 66618244 + 7873900225 = 8162^2 + 88735^2 .

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

It is not a de Polignac number, because 7940518469 - 2⁸ = 7940518213 is a prime.

It is a super-2 number, since 2×7940518469² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 7940518469.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7940518489) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 719954 + ... + 730899.

It is an arithmetic number, because the mean of its divisors is an integer number (1071455679).

Almost surely, 2^7940518469 is an apocalyptic number.

It is an amenable number.

7940518469 is a deficient number, since it is larger than the sum of its proper divisors (631126963).

7940518469 is a wasteful number, since it uses less digits than its factorization.

7940518469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1451287.

The product of its (nonzero) digits is 2177280, while the sum is 53.

The square root of 7940518469 is about 89109.5868523696. The cubic root of 7940518469 is about 1995.0308698477.

The spelling of 7940518469 in words is "seven billion, nine hundred forty million, five hundred eighteen thousand, four hundred sixty-nine".