1961067904 has 32 divisors (see below), whose sum is σ = 3936671640. Its totient is φ = 973040640.

The previous prime is 1961067887. The next prime is 1961067917. The reversal of 1961067904 is 4097601691.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent 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, 41709 + ... + 75244.

Almost surely, 2^1961067904 is an apocalyptic number.

It is an amenable number.

1961067904 is an abundant number, since it is smaller than the sum of its proper divisors (1975603736).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1961067904 is a wasteful number, since it uses less digits than its factorization.

1961067904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117098 (or 117086 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 43.

The square root of 1961067904 is about 44283.9463462777. The cubic root of 1961067904 is about 1251.6921943356.

The spelling of 1961067904 in words is "one billion, nine hundred sixty-one million, sixty-seven thousand, nine hundred four".