1980472667 has 2 divisors, whose sum is σ = 1980472668. Its totient is φ = 1980472666.

The previous prime is 1980472649. The next prime is 1980472721. The reversal of 1980472667 is 7662740891.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1980472667 - 2¹⁰ = 1980471643 is a prime.

It is not a weakly prime, because it can be changed into another prime (1980472867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 990236333 + 990236334.

It is an arithmetic number, because the mean of its divisors is an integer number (990236334).

Almost surely, 2^1980472667 is an apocalyptic number.

1980472667 is a deficient number, since it is larger than the sum of its proper divisors (1).

1980472667 is an equidigital number, since it uses as much as digits as its factorization.

1980472667 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1016064, while the sum is 50.

The square root of 1980472667 is about 44502.5018060783. The cubic root of 1980472667 is about 1255.8071488003.

The spelling of 1980472667 in words is "one billion, nine hundred eighty million, four hundred seventy-two thousand, six hundred sixty-seven".