1981962122 has 32 divisors (see below), whose sum is σ = 3510534144. Its totient is φ = 821242800.

The previous prime is 1981962121. The next prime is 1981962139. The reversal of 1981962122 is 2212691891.

It is a self number, because there is not a number n which added to its sum of digits gives 1981962122.

It is not an unprimeable number, because it can be changed into a prime (1981962121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 923783 + ... + 925925.

It is an arithmetic number, because the mean of its divisors is an integer number (109704192).

Almost surely, 2^1981962122 is an apocalyptic number.

1981962122 is a deficient number, since it is larger than the sum of its proper divisors (1528572022).

1981962122 is a wasteful number, since it uses less digits than its factorization.

1981962122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4314.

The product of its digits is 31104, while the sum is 41.

The square root of 1981962122 is about 44519.2331694965. The cubic root of 1981962122 is about 1256.1218884002.

The spelling of 1981962122 in words is "one billion, nine hundred eighty-one million, nine hundred sixty-two thousand, one hundred twenty-two".