4661869491 has 16 divisors (see below), whose sum is σ = 6911825920. Its totient is φ = 3105504360.

The previous prime is 4661869409. The next prime is 4661869493. The reversal of 4661869491 is 1949681664.

It is a happy number.

4661869491 is a `hidden beast` number, since 466 + 1 + 8 + 6 + 94 + 91 = 666.

It is not a de Polignac number, because 4661869491 - 2¹⁴ = 4661853107 is a prime.

It is a super-2 number, since 2×4661869491² = 43466054302233198162, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4661869493) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31075 + ... + 101436.

It is an arithmetic number, because the mean of its divisors is an integer number (431989120).

Almost surely, 2^4661869491 is an apocalyptic number.

4661869491 is a deficient number, since it is larger than the sum of its proper divisors (2249956429).

4661869491 is a wasteful number, since it uses less digits than its factorization.

4661869491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133823 (or 133817 counting only the distinct ones).

The product of its digits is 2239488, while the sum is 54.

The square root of 4661869491 is about 68277.8843477154. The cubic root of 4661869491 is about 1670.5265041234.

The spelling of 4661869491 in words is "four billion, six hundred sixty-one million, eight hundred sixty-nine thousand, four hundred ninety-one".