1961871108 has 96 divisors (see below), whose sum is σ = 4765630464. Its totient is φ = 627838848.

The previous prime is 1961871103. The next prime is 1961871137. The reversal of 1961871108 is 8011781691.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 1961871108.

It is not an unprimeable number, because it can be changed into a prime (1961871101) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 8642491 + ... + 8642717.

It is an arithmetic number, because the mean of its divisors is an integer number (49641984).

Almost surely, 2^1961871108 is an apocalyptic number.

It is an amenable number.

1961871108 is an abundant number, since it is smaller than the sum of its proper divisors (2803759356).

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

1961871108 is a wasteful number, since it uses less digits than its factorization.

1961871108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 521 (or 519 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 42.

The square root of 1961871108 is about 44293.0142121757. The cubic root of 1961871108 is about 1251.8630582051.

The spelling of 1961871108 in words is "one billion, nine hundred sixty-one million, eight hundred seventy-one thousand, one hundred eight".