7621611438 has 16 divisors (see below), whose sum is σ = 17420826240. Its totient is φ = 2177603256.

The previous prime is 7621611419. The next prime is 7621611521. The reversal of 7621611438 is 8341161267.

It is a junction number, because it is equal to n+sod(n) for n = 7621611396 and 7621611405.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 90733428 + ... + 90733511.

It is an arithmetic number, because the mean of its divisors is an integer number (1088801640).

Almost surely, 2^7621611438 is an apocalyptic number.

7621611438 is an abundant number, since it is smaller than the sum of its proper divisors (9799214802).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7621611438 is a wasteful number, since it uses less digits than its factorization.

7621611438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181466951.

The product of its digits is 48384, while the sum is 39.

The square root of 7621611438 is about 87301.8409771524. The cubic root of 7621611438 is about 1967.9569840927.

The spelling of 7621611438 in words is "seven billion, six hundred twenty-one million, six hundred eleven thousand, four hundred thirty-eight".