491826097 has 4 divisors (see below), whose sum is σ = 562086976. Its totient is φ = 421565220.

The previous prime is 491826091. The next prime is 491826149. The reversal of 491826097 is 790628194.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 491826097 - 2¹¹ = 491824049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (491826091) 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, 35130429 + ... + 35130442.

It is an arithmetic number, because the mean of its divisors is an integer number (140521744).

Almost surely, 2^491826097 is an apocalyptic number.

It is an amenable number.

491826097 is a deficient number, since it is larger than the sum of its proper divisors (70260879).

491826097 is an equidigital number, since it uses as much as digits as its factorization.

491826097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70260878.

The product of its (nonzero) digits is 217728, while the sum is 46.

The square root of 491826097 is about 22177.1525899968. The cubic root of 491826097 is about 789.3516536003.

It can be divided in two parts, 49 and 1826097, that multiplied together give a triangular number (89478753 = T₁₃₃₇₇).

The spelling of 491826097 in words is "four hundred ninety-one million, eight hundred twenty-six thousand, ninety-seven".