7538920422 has 64 divisors (see below), whose sum is σ = 16918066944. Its totient is φ = 2219495040.

The previous prime is 7538920421. The next prime is 7538920429. The reversal of 7538920422 is 2240298357.

It is a super-2 number, since 2×7538920422² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7538920421) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2017668 + ... + 2021400.

It is an arithmetic number, because the mean of its divisors is an integer number (264344796).

Almost surely, 2^7538920422 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7538920422, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8459033472).

7538920422 is an abundant number, since it is smaller than the sum of its proper divisors (9379146522).

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

7538920422 is a wasteful number, since it uses less digits than its factorization.

7538920422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4613.

The product of its (nonzero) digits is 241920, while the sum is 42.

The square root of 7538920422 is about 86826.9567703487. The cubic root of 7538920422 is about 1960.8139426233.

The spelling of 7538920422 in words is "seven billion, five hundred thirty-eight million, nine hundred twenty thousand, four hundred twenty-two".