1980522291 has 8 divisors (see below), whose sum is σ = 2880759744. Its totient is φ = 1200316520.

The previous prime is 1980522241. The next prime is 1980522307. The reversal of 1980522291 is 1922250891.

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

It is a cyclic number.

It is not a de Polignac number, because 1980522291 - 2⁷ = 1980522163 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1980522221) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 30007881 + ... + 30007946.

It is an arithmetic number, because the mean of its divisors is an integer number (360094968).

Almost surely, 2^1980522291 is an apocalyptic number.

1980522291 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1980522291 is a deficient number, since it is larger than the sum of its proper divisors (900237453).

1980522291 is a wasteful number, since it uses less digits than its factorization.

1980522291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60015841.

The product of its (nonzero) digits is 25920, while the sum is 39.

The square root of 1980522291 is about 44503.0593442743. The cubic root of 1980522291 is about 1255.8176374838.

The spelling of 1980522291 in words is "one billion, nine hundred eighty million, five hundred twenty-two thousand, two hundred ninety-one".