1961934988 has 12 divisors (see below), whose sum is σ = 3697492960. Its totient is φ = 905508432.

The previous prime is 1961934971. The next prime is 1961935033. The reversal of 1961934988 is 8894391691.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18864708 + ... + 18864811.

Almost surely, 2^1961934988 is an apocalyptic number.

It is an amenable number.

1961934988 is a deficient number, since it is larger than the sum of its proper divisors (1735557972).

1961934988 is a wasteful number, since it uses less digits than its factorization.

1961934988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37729536 (or 37729534 counting only the distinct ones).

The product of its digits is 3359232, while the sum is 58.

The square root of 1961934988 is about 44293.7353132472. The cubic root of 1961934988 is about 1251.8766452588.

The spelling of 1961934988 in words is "one billion, nine hundred sixty-one million, nine hundred thirty-four thousand, nine hundred eighty-eight".