1980396242 has 16 divisors (see below), whose sum is σ = 3295576800. Its totient is φ = 884922240.

The previous prime is 1980396211. The next prime is 1980396263. The reversal of 1980396242 is 2426930891.

It is a junction number, because it is equal to n+sod(n) for n = 1980396193 and 1980396202.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 761567 + ... + 764162.

It is an arithmetic number, because the mean of its divisors is an integer number (205973550).

Almost surely, 2^1980396242 is an apocalyptic number.

1980396242 is a deficient number, since it is larger than the sum of its proper divisors (1315180558).

1980396242 is a wasteful number, since it uses less digits than its factorization.

1980396242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1525801.

The product of its (nonzero) digits is 186624, while the sum is 44.

The square root of 1980396242 is about 44501.6431382033. The cubic root of 1980396242 is about 1255.7909950309.

The spelling of 1980396242 in words is "one billion, nine hundred eighty million, three hundred ninety-six thousand, two hundred forty-two".