492972187 has 2 divisors, whose sum is σ = 492972188. Its totient is φ = 492972186.

The previous prime is 492972121. The next prime is 492972211. The reversal of 492972187 is 781279294.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 492972187 - 2⁷ = 492972059 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 492972187.

It is not a weakly prime, because it can be changed into another prime (492972107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 246486093 + 246486094.

It is an arithmetic number, because the mean of its divisors is an integer number (246486094).

Almost surely, 2^492972187 is an apocalyptic number.

492972187 is a deficient number, since it is larger than the sum of its proper divisors (1).

492972187 is an equidigital number, since it uses as much as digits as its factorization.

492972187 is an evil number, because the sum of its binary digits is even.

The product of its digits is 508032, while the sum is 49.

The square root of 492972187 is about 22202.9769850802. The cubic root of 492972187 is about 789.9643134016.

The spelling of 492972187 in words is "four hundred ninety-two million, nine hundred seventy-two thousand, one hundred eighty-seven".