7619640436 has 18 divisors (see below), whose sum is σ = 13704509238. Its totient is φ = 3706849440.

The previous prime is 7619640419. The next prime is 7619640439. The reversal of 7619640436 is 6340469167.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 2421230436 + 5198410000 = 49206^2 + 72100^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7619640439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 690255 + ... + 701206.

Almost surely, 2^7619640436 is an apocalyptic number.

It is an amenable number.

7619640436 is a deficient number, since it is larger than the sum of its proper divisors (6084868802).

7619640436 is a wasteful number, since it uses less digits than its factorization.

7619640436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1391539 (or 1391500 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 46.

The square root of 7619640436 is about 87290.5518140423. The cubic root of 7619640436 is about 1967.7873269890.

The spelling of 7619640436 in words is "seven billion, six hundred nineteen million, six hundred forty thousand, four hundred thirty-six".