1961011946 has 32 divisors (see below), whose sum is σ = 3016440000. Its totient is φ = 955971072.

The previous prime is 1961011937. The next prime is 1961011963. The reversal of 1961011946 is 6491101691.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 5173985 + ... + 5174363.

It is an arithmetic number, because the mean of its divisors is an integer number (94263750).

Almost surely, 2^1961011946 is an apocalyptic number.

1961011946 is a deficient number, since it is larger than the sum of its proper divisors (1055428054).

1961011946 is a wasteful number, since it uses less digits than its factorization.

1961011946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 806.

The product of its (nonzero) digits is 11664, while the sum is 38.

The square root of 1961011946 is about 44283.3145326770. The cubic root of 1961011946 is about 1251.6802887716.

The spelling of 1961011946 in words is "one billion, nine hundred sixty-one million, eleven thousand, nine hundred forty-six".