1961436118 has 8 divisors (see below), whose sum is σ = 2942436960. Its totient is φ = 980623800.

The previous prime is 1961436077. The next prime is 1961436121. The reversal of 1961436118 is 8116341691.

It is a sphenic number, since it is the product of 3 distinct primes.

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 3 ways as a sum of consecutive naturals, for example, 17358 + ... + 64993.

It is an arithmetic number, because the mean of its divisors is an integer number (367804620).

Almost surely, 2^1961436118 is an apocalyptic number.

1961436118 is a deficient number, since it is larger than the sum of its proper divisors (981000842).

1961436118 is a wasteful number, since it uses less digits than its factorization.

1961436118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94262.

The product of its digits is 31104, while the sum is 40.

The square root of 1961436118 is about 44288.1035719526. The cubic root of 1961436118 is about 1251.7705295028.

The spelling of 1961436118 in words is "one billion, nine hundred sixty-one million, four hundred thirty-six thousand, one hundred eighteen".