1961233842 has 16 divisors (see below), whose sum is σ = 3923243712. Its totient is φ = 653615280.

The previous prime is 1961233829. The next prime is 1961233843. The reversal of 1961233842 is 2483321691.

1961233842 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 1961233842.

It is not an unprimeable number, because it can be changed into a prime (1961233843) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3592 + ... + 62732.

It is an arithmetic number, because the mean of its divisors is an integer number (245202732).

Almost surely, 2^1961233842 is an apocalyptic number.

1961233842 is an abundant number, since it is smaller than the sum of its proper divisors (1962009870).

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

1961233842 is a wasteful number, since it uses less digits than its factorization.

1961233842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64673.

The product of its digits is 62208, while the sum is 39.

The square root of 1961233842 is about 44285.8198749893. The cubic root of 1961233842 is about 1251.7274977946.

The spelling of 1961233842 in words is "one billion, nine hundred sixty-one million, two hundred thirty-three thousand, eight hundred forty-two".