811961962 has 16 divisors (see below), whose sum is σ = 1452454272. Its totient is φ = 332853840.

The previous prime is 811961957. The next prime is 811961963. The reversal of 811961962 is 269169118.

It is not an unprimeable number, because it can be changed into a prime (811961963) 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, 1260489 + ... + 1261132.

It is an arithmetic number, because the mean of its divisors is an integer number (90778392).

Almost surely, 2^811961962 is an apocalyptic number.

811961962 is a deficient number, since it is larger than the sum of its proper divisors (640492310).

811961962 is a wasteful number, since it uses less digits than its factorization.

811961962 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2521653.

The product of its digits is 46656, while the sum is 43.

The square root of 811961962 is about 28494.9462536780. The cubic root of 811961962 is about 932.9217711238.

The spelling of 811961962 in words is "eight hundred eleven million, nine hundred sixty-one thousand, nine hundred sixty-two".