180138463 has 2 divisors, whose sum is σ = 180138464. Its totient is φ = 180138462.

The previous prime is 180138421. The next prime is 180138479. The reversal of 180138463 is 364831081.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 180138463 - 2¹³ = 180130271 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (180130463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90069231 + 90069232.

It is an arithmetic number, because the mean of its divisors is an integer number (90069232).

Almost surely, 2^180138463 is an apocalyptic number.

180138463 is a deficient number, since it is larger than the sum of its proper divisors (1).

180138463 is an equidigital number, since it uses as much as digits as its factorization.

180138463 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 180138463 is about 13421.5670843609. The cubic root of 180138463 is about 564.7663565238.

The spelling of 180138463 in words is "one hundred eighty million, one hundred thirty-eight thousand, four hundred sixty-three".