1961612122 has 8 divisors (see below), whose sum is σ = 2944344672. Its totient is φ = 980163900.

The previous prime is 1961612083. The next prime is 1961612129. The reversal of 1961612122 is 2212161691.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (1961612129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 317254 + ... + 323377.

It is an arithmetic number, because the mean of its divisors is an integer number (368043084).

Almost surely, 2^1961612122 is an apocalyptic number.

1961612122 is a deficient number, since it is larger than the sum of its proper divisors (982732550).

1961612122 is a wasteful number, since it uses less digits than its factorization.

1961612122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 642164.

The product of its digits is 2592, while the sum is 31.

The square root of 1961612122 is about 44290.0905621111. The cubic root of 1961612122 is about 1251.8079697622.

The spelling of 1961612122 in words is "one billion, nine hundred sixty-one million, six hundred twelve thousand, one hundred twenty-two".