9120612638 has 4 divisors (see below), whose sum is σ = 13680918960. Its totient is φ = 4560306318.

The previous prime is 9120612593. The next prime is 9120612661. The reversal of 9120612638 is 8362160219.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2280153158 + ... + 2280153161.

It is an arithmetic number, because the mean of its divisors is an integer number (3420229740).

Almost surely, 2^9120612638 is an apocalyptic number.

9120612638 is a deficient number, since it is larger than the sum of its proper divisors (4560306322).

9120612638 is a wasteful number, since it uses less digits than its factorization.

9120612638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4560306321.

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 9120612638 is about 95501.8986093994. The cubic root of 9120612638 is about 2089.3346353870.

The spelling of 9120612638 in words is "nine billion, one hundred twenty million, six hundred twelve thousand, six hundred thirty-eight".