1536037821 has 12 divisors (see below), whose sum is σ = 2228246748. Its totient is φ = 1019628864.

The previous prime is 1536037799. The next prime is 1536037829. The reversal of 1536037821 is 1287306351.

It can be written as a sum of positive squares in 2 ways, for example, as 296012025 + 1240025796 = 17205^2 + 35214^2 .

It is not a de Polignac number, because 1536037821 - 2²⁶ = 1468928957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1536037829) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 364150 + ... + 368343.

It is an arithmetic number, because the mean of its divisors is an integer number (185687229).

Almost surely, 2^1536037821 is an apocalyptic number.

It is an amenable number.

1536037821 is a deficient number, since it is larger than the sum of its proper divisors (692208927).

1536037821 is a wasteful number, since it uses less digits than its factorization.

1536037821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 732732 (or 732729 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 1536037821 is about 39192.3183927667. The cubic root of 1536037821 is about 1153.8091261892.

The spelling of 1536037821 in words is "one billion, five hundred thirty-six million, thirty-seven thousand, eight hundred twenty-one".