1036521813 has 8 divisors (see below), whose sum is σ = 1385237376. Its totient is φ = 689410400.

The previous prime is 1036521793. The next prime is 1036521823. The reversal of 1036521813 is 3181256301.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1036521813 - 2¹² = 1036517717 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1036521823) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 399528 + ... + 402113.

It is an arithmetic number, because the mean of its divisors is an integer number (173154672).

Almost surely, 2^1036521813 is an apocalyptic number.

It is an amenable number.

1036521813 is a deficient number, since it is larger than the sum of its proper divisors (348715563).

1036521813 is an equidigital number, since it uses as much as digits as its factorization.

1036521813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 802075.

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 1036521813 is about 32195.0588289570. The cubic root of 1036521813 is about 1012.0286686588.

The spelling of 1036521813 in words is "one billion, thirty-six million, five hundred twenty-one thousand, eight hundred thirteen".