1980452217 has 8 divisors (see below), whose sum is σ = 2644712224. Its totient is φ = 1318246848.

The previous prime is 1980452209. The next prime is 1980452231. The reversal of 1980452217 is 7122540891.

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

It is not a de Polignac number, because 1980452217 - 2³ = 1980452209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1980452317) 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, 511408 + ... + 515265.

It is an arithmetic number, because the mean of its divisors is an integer number (330589028).

Almost surely, 2^1980452217 is an apocalyptic number.

It is an amenable number.

1980452217 is a deficient number, since it is larger than the sum of its proper divisors (664260007).

1980452217 is a wasteful number, since it uses less digits than its factorization.

1980452217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1027319.

The product of its (nonzero) digits is 40320, while the sum is 39.

The square root of 1980452217 is about 44502.2720431216. The cubic root of 1980452217 is about 1255.8028263734.

The spelling of 1980452217 in words is "one billion, nine hundred eighty million, four hundred fifty-two thousand, two hundred seventeen".