495831491 has 4 divisors (see below), whose sum is σ = 507924984. Its totient is φ = 483738000.

The previous prime is 495831481. The next prime is 495831499. The reversal of 495831491 is 194138594.

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

It is a cyclic number.

It is not a de Polignac number, because 495831491 - 2¹⁴ = 495815107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (495831499) 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, 6046685 + ... + 6046766.

It is an arithmetic number, because the mean of its divisors is an integer number (126981246).

Almost surely, 2^495831491 is an apocalyptic number.

495831491 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

495831491 is a deficient number, since it is larger than the sum of its proper divisors (12093493).

495831491 is a wasteful number, since it uses less digits than its factorization.

495831491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12093492.

The product of its digits is 155520, while the sum is 44.

The square root of 495831491 is about 22267.2739912186. The cubic root of 495831491 is about 791.4886692614.

The spelling of 495831491 in words is "four hundred ninety-five million, eight hundred thirty-one thousand, four hundred ninety-one".