492081491 has 4 divisors (see below), whose sum is σ = 536816184. Its totient is φ = 447346800.

The previous prime is 492081451. The next prime is 492081547. The reversal of 492081491 is 194180294.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-492081491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (492081451) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22367330 + ... + 22367351.

It is an arithmetic number, because the mean of its divisors is an integer number (134204046).

Almost surely, 2^492081491 is an apocalyptic number.

492081491 is a deficient number, since it is larger than the sum of its proper divisors (44734693).

492081491 is a wasteful number, since it uses less digits than its factorization.

492081491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44734692.

The product of its (nonzero) digits is 20736, while the sum is 38.

The square root of 492081491 is about 22182.9098857657. The cubic root of 492081491 is about 789.4882606875.

The spelling of 492081491 in words is "four hundred ninety-two million, eighty-one thousand, four hundred ninety-one".