167540489 has 2 divisors, whose sum is σ = 167540490. Its totient is φ = 167540488.

The previous prime is 167540479. The next prime is 167540501. The reversal of 167540489 is 984045761.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 165894400 + 1646089 = 12880^2 + 1283^2 .

It is a cyclic number.

It is not a de Polignac number, because 167540489 - 2¹⁶ = 167474953 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (167540419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83770244 + 83770245.

It is an arithmetic number, because the mean of its divisors is an integer number (83770245).

Almost surely, 2^167540489 is an apocalyptic number.

It is an amenable number.

167540489 is a deficient number, since it is larger than the sum of its proper divisors (1).

167540489 is an equidigital number, since it uses as much as digits as its factorization.

167540489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 241920, while the sum is 44.

The square root of 167540489 is about 12943.7432375646. The cubic root of 167540489 is about 551.2812981272.

The spelling of 167540489 in words is "one hundred sixty-seven million, five hundred forty thousand, four hundred eighty-nine".