1006631813 has 8 divisors (see below), whose sum is σ = 1104493536. Its totient is φ = 909828400.

The previous prime is 1006631803. The next prime is 1006631827. The reversal of 1006631813 is 3181366001.

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 1006631813 - 2⁴ = 1006631797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1006631803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 262583 + ... + 266388.

It is an arithmetic number, because the mean of its divisors is an integer number (138061692).

Almost surely, 2^1006631813 is an apocalyptic number.

It is an amenable number.

1006631813 is a deficient number, since it is larger than the sum of its proper divisors (97861723).

1006631813 is a wasteful number, since it uses less digits than its factorization.

1006631813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 529155.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 1006631813 is about 31727.4614963126. The cubic root of 1006631813 is about 1002.2057354871.

Adding to 1006631813 its reverse (3181366001), we get a palindrome (4187997814).

The spelling of 1006631813 in words is "one billion, six million, six hundred thirty-one thousand, eight hundred thirteen".