1961934986 has 8 divisors (see below), whose sum is σ = 3210439104. Its totient is φ = 891788620.

The previous prime is 1961934971. The next prime is 1961935033. The reversal of 1961934986 is 6894391691.

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

It is a super-3 number, since 3×1961934986³ (a number of 29 digits) contains 333 as substring.

It is a Curzon number.

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, 44589410 + ... + 44589453.

It is an arithmetic number, because the mean of its divisors is an integer number (401304888).

Almost surely, 2^1961934986 is an apocalyptic number.

1961934986 is a deficient number, since it is larger than the sum of its proper divisors (1248504118).

1961934986 is a wasteful number, since it uses less digits than its factorization.

1961934986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89178876.

The product of its digits is 2519424, while the sum is 56.

The square root of 1961934986 is about 44293.7352906706. The cubic root of 1961934986 is about 1251.8766448334.

The spelling of 1961934986 in words is "one billion, nine hundred sixty-one million, nine hundred thirty-four thousand, nine hundred eighty-six".