811541630 has 16 divisors (see below), whose sum is σ = 1478376144. Its totient is φ = 320705280.

The previous prime is 811541617. The next prime is 811541639. The reversal of 811541630 is 36145118.

It is a junction number, because it is equal to n+sod(n) for n = 811541593 and 811541602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (811541639) 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, 488051 + ... + 489710.

It is an arithmetic number, because the mean of its divisors is an integer number (92398509).

Almost surely, 2^811541630 is an apocalyptic number.

811541630 is a deficient number, since it is larger than the sum of its proper divisors (666834514).

811541630 is a wasteful number, since it uses less digits than its factorization.

811541630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 977851.

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 811541630 is about 28487.5697454170. The cubic root of 811541630 is about 932.7607600674.

Adding to 811541630 its reverse (36145118), we get a palindrome (847686748).

The spelling of 811541630 in words is "eight hundred eleven million, five hundred forty-one thousand, six hundred thirty".