1961516850 has 48 divisors (see below), whose sum is σ = 4868497920. Its totient is φ = 522648000.

The previous prime is 1961516759. The next prime is 1961516863. The reversal of 1961516850 is 586151691.

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 an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 209775 + ... + 218925.

It is an arithmetic number, because the mean of its divisors is an integer number (101427040).

Almost surely, 2^1961516850 is an apocalyptic number.

1961516850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1961516850 is an abundant number, since it is smaller than the sum of its proper divisors (2906981070).

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

1961516850 is a wasteful number, since it uses less digits than its factorization.

1961516850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10595 (or 10590 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 42.

The square root of 1961516850 is about 44289.0150037230. The cubic root of 1961516850 is about 1251.7877034077.

The spelling of 1961516850 in words is "one billion, nine hundred sixty-one million, five hundred sixteen thousand, eight hundred fifty".