1663472407 has 2 divisors, whose sum is σ = 1663472408. Its totient is φ = 1663472406.

The previous prime is 1663472359. The next prime is 1663472411. The reversal of 1663472407 is 7042743661.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1663472407 - 2¹¹ = 1663470359 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1663472407.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1663472417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 831736203 + 831736204.

It is an arithmetic number, because the mean of its divisors is an integer number (831736204).

Almost surely, 2^1663472407 is an apocalyptic number.

1663472407 is a deficient number, since it is larger than the sum of its proper divisors (1).

1663472407 is an equidigital number, since it uses as much as digits as its factorization.

1663472407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 169344, while the sum is 40.

The square root of 1663472407 is about 40785.6887523062. The cubic root of 1663472407 is about 1184.8731743656.

The spelling of 1663472407 in words is "one billion, six hundred sixty-three million, four hundred seventy-two thousand, four hundred seven".