491410687970 has 8 divisors (see below), whose sum is σ = 884539238364. Its totient is φ = 196564275184.

The previous prime is 491410687931. The next prime is 491410687993. The reversal of 491410687970 is 79786014194.

It can be written as a sum of positive squares in 2 ways, for example, as 470065185769 + 21345502201 = 685613^2 + 146101^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×491410687970² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24570534389 + ... + 24570534408.

Almost surely, 2^491410687970 is an apocalyptic number.

491410687970 is a deficient number, since it is larger than the sum of its proper divisors (393128550394).

491410687970 is a wasteful number, since it uses less digits than its factorization.

491410687970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49141068804.

The product of its (nonzero) digits is 3048192, while the sum is 56.

The spelling of 491410687970 in words is "four hundred ninety-one billion, four hundred ten million, six hundred eighty-seven thousand, nine hundred seventy".