1961842560 has 64 divisors (see below), whose sum is σ = 6253379280. Its totient is φ = 523157504.

The previous prime is 1961842543. The next prime is 1961842573. The reversal of 1961842560 is 652481691.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 508977 + ... + 512816.

Almost surely, 2^1961842560 is an apocalyptic number.

1961842560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1961842560 is an abundant number, since it is smaller than the sum of its proper divisors (4291536720).

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

1961842560 is a wasteful number, since it uses less digits than its factorization.

1961842560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1021815 (or 1021803 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 42.

The square root of 1961842560 is about 44292.6919479952. The cubic root of 1961842560 is about 1251.8569860495.

The spelling of 1961842560 in words is "one billion, nine hundred sixty-one million, eight hundred forty-two thousand, five hundred sixty".