1537921836 has 96 divisors (see below), whose sum is σ = 4357382400. Its totient is φ = 465212160.

The previous prime is 1537921757. The next prime is 1537921843. The reversal of 1537921836 is 6381297351.

It is a super-2 number, since 2×1537921836² = 4730407147291221792, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1537921791 and 1537921800.

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 31 ways as a sum of consecutive naturals, for example, 1198051 + ... + 1199333.

It is an arithmetic number, because the mean of its divisors is an integer number (45389400).

Almost surely, 2^1537921836 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1537921836, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2178691200).

1537921836 is an abundant number, since it is smaller than the sum of its proper divisors (2819460564).

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

1537921836 is a wasteful number, since it uses less digits than its factorization.

1537921836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2316 (or 2308 counting only the distinct ones).

The product of its digits is 272160, while the sum is 45.

The square root of 1537921836 is about 39216.3465406965. The cubic root of 1537921836 is about 1154.2806652634.

The spelling of 1537921836 in words is "one billion, five hundred thirty-seven million, nine hundred twenty-one thousand, eight hundred thirty-six".