813537201 has 4 divisors (see below), whose sum is σ = 1084716272. Its totient is φ = 542358132.

The previous prime is 813537191. The next prime is 813537217. The reversal of 813537201 is 102735318.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 813537201 - 2⁷ = 813537073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (813537251) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 135589531 + ... + 135589536.

It is an arithmetic number, because the mean of its divisors is an integer number (271179068).

Almost surely, 2^813537201 is an apocalyptic number.

It is an amenable number.

813537201 is a deficient number, since it is larger than the sum of its proper divisors (271179071).

813537201 is a wasteful number, since it uses less digits than its factorization.

813537201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271179070.

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 813537201 is about 28522.5735339573. The cubic root of 813537201 is about 933.5246833720.

The spelling of 813537201 in words is "eight hundred thirteen million, five hundred thirty-seven thousand, two hundred one".