1961220342 has 16 divisors (see below), whose sum is σ = 3922960320. Its totient is φ = 653653512.

The previous prime is 1961220319. The next prime is 1961220353. The reversal of 1961220342 is 2430221691.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41653 + ... + 75215.

It is an arithmetic number, because the mean of its divisors is an integer number (245185020).

Almost surely, 2^1961220342 is an apocalyptic number.

1961220342 is an abundant number, since it is smaller than the sum of its proper divisors (1961739978).

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

1961220342 is a wasteful number, since it uses less digits than its factorization.

1961220342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43307.

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 1961220342 is about 44285.6674557356. The cubic root of 1961220342 is about 1251.7246257319.

The spelling of 1961220342 in words is "one billion, nine hundred sixty-one million, two hundred twenty thousand, three hundred forty-two".