180472987 has 2 divisors, whose sum is σ = 180472988. Its totient is φ = 180472986.

The previous prime is 180472891. The next prime is 180473023. The reversal of 180472987 is 789274081.

180472987 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is an emirp because it is prime and its reverse (789274081) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-180472987 is a prime.

It is not a weakly prime, because it can be changed into another prime (180472087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90236493 + 90236494.

It is an arithmetic number, because the mean of its divisors is an integer number (90236494).

Almost surely, 2^180472987 is an apocalyptic number.

180472987 is a deficient number, since it is larger than the sum of its proper divisors (1).

180472987 is an equidigital number, since it uses as much as digits as its factorization.

180472987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 225792, while the sum is 46.

The square root of 180472987 is about 13434.0234851663. The cubic root of 180472987 is about 565.1157379001.

The spelling of 180472987 in words is "one hundred eighty million, four hundred seventy-two thousand, nine hundred eighty-seven".