354421818 has 48 divisors (see below), whose sum is σ = 823848480. Its totient is φ = 114062256.

The previous prime is 354421811. The next prime is 354421819. The reversal of 354421818 is 818124453.

354421818 is a `hidden beast` number, since 35 + 442 + 181 + 8 = 666.

It is a super-2 number, since 2×354421818² = 251229650148850248, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (354421811) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1521 + ... + 26667.

It is an arithmetic number, because the mean of its divisors is an integer number (17163510).

Almost surely, 2^354421818 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 354421818, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (411924240).

354421818 is an abundant number, since it is smaller than the sum of its proper divisors (469426662).

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

354421818 is a wasteful number, since it uses less digits than its factorization.

354421818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25193 (or 25181 counting only the distinct ones).

The product of its digits is 30720, while the sum is 36.

The square root of 354421818 is about 18826.0940717930. The cubic root of 354421818 is about 707.6852594137.

The spelling of 354421818 in words is "three hundred fifty-four million, four hundred twenty-one thousand, eight hundred eighteen".