1538096620 has 48 divisors (see below), whose sum is σ = 3405201408. Its totient is φ = 582713280.

The previous prime is 1538096603. The next prime is 1538096621. The reversal of 1538096620 is 266908351.

It is not an unprimeable number, because it can be changed into a prime (1538096621) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2749 + ... + 55531.

It is an arithmetic number, because the mean of its divisors is an integer number (70941696).

Almost surely, 2^1538096620 is an apocalyptic number.

1538096620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1538096620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1702600704).

1538096620 is an abundant number, since it is smaller than the sum of its proper divisors (1867104788).

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

1538096620 is a wasteful number, since it uses less digits than its factorization.

1538096620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52870 (or 52868 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 40.

The square root of 1538096620 is about 39218.5749358643. The cubic root of 1538096620 is about 1154.3243914019.

The spelling of 1538096620 in words is "one billion, five hundred thirty-eight million, ninety-six thousand, six hundred twenty".