469135681 has 8 divisors (see below), whose sum is σ = 536649984. Its totient is φ = 401745120.

The previous prime is 469135627. The next prime is 469135687. The reversal of 469135681 is 186531964.

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

It is not a de Polignac number, because 469135681 - 2⁹ = 469135169 is a prime.

It is a super-2 number, since 2×469135681² = 440176574374667522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (469135687) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22660 + ... + 38101.

It is an arithmetic number, because the mean of its divisors is an integer number (67081248).

Almost surely, 2^469135681 is an apocalyptic number.

It is an amenable number.

469135681 is a deficient number, since it is larger than the sum of its proper divisors (67514303).

469135681 is a wasteful number, since it uses less digits than its factorization.

469135681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61871.

The product of its digits is 155520, while the sum is 43.

The square root of 469135681 is about 21659.5401844083. The cubic root of 469135681 is about 777.0211170688.

The spelling of 469135681 in words is "four hundred sixty-nine million, one hundred thirty-five thousand, six hundred eighty-one".