1961129196 has 36 divisors (see below), whose sum is σ = 5338630752. Its totient is φ = 603424224.

The previous prime is 1961129153. The next prime is 1961129237. The reversal of 1961129196 is 6919211691.

1961129196 is a `hidden beast` number, since 1 + 9 + 611 + 29 + 1 + 9 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a nude number because it is divisible by every one of its digits.

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 11 ways as a sum of consecutive naturals, for example, 2094756 + ... + 2095691.

Almost surely, 2^1961129196 is an apocalyptic number.

It is an amenable number.

1961129196 is an abundant number, since it is smaller than the sum of its proper divisors (3377501556).

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

1961129196 is a wasteful number, since it uses less digits than its factorization.

1961129196 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4190470 (or 4190465 counting only the distinct ones).

The product of its digits is 52488, while the sum is 45.

The square root of 1961129196 is about 44284.6383749489. The cubic root of 1961129196 is about 1251.7052344958.

The spelling of 1961129196 in words is "one billion, nine hundred sixty-one million, one hundred twenty-nine thousand, one hundred ninety-six".