471820818 has 32 divisors (see below), whose sum is σ = 1107598464. Its totient is φ = 131162112.

The previous prime is 471820813. The next prime is 471820891. The reversal of 471820818 is 818028174.

It is a happy number.

It is a super-2 number, since 2×471820818² = 445229768596378248, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (471820813) 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, 150255 + ... + 153362.

It is an arithmetic number, because the mean of its divisors is an integer number (34612452).

Almost surely, 2^471820818 is an apocalyptic number.

471820818 is an abundant number, since it is smaller than the sum of its proper divisors (635777646).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

471820818 is a wasteful number, since it uses less digits than its factorization.

471820818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303666.

The product of its (nonzero) digits is 28672, while the sum is 39.

The square root of 471820818 is about 21721.4368309281. The cubic root of 471820818 is about 778.5007460035.

The spelling of 471820818 in words is "four hundred seventy-one million, eight hundred twenty thousand, eight hundred eighteen".