451900000 has 72 divisors (see below), whose sum is σ = 1112272560. Its totient is φ = 180720000.

The previous prime is 451899997. The next prime is 451900027. The reversal of 451900000 is 9154.

It is a super-2 number, since 2×451900000² = 408427220000000000, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 97741 + ... + 102259.

It is an arithmetic number, because the mean of its divisors is an integer number (15448230).

Almost surely, 2^451900000 is an apocalyptic number.

451900000 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 451900000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (556136280).

451900000 is an abundant number, since it is smaller than the sum of its proper divisors (660372560).

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

451900000 is an frugal number, since it uses more digits than its factorization.

451900000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4554 (or 4526 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 451900000 is about 21257.9396932064. The cubic root of 451900000 is about 767.3864276132.

Adding to 451900000 its reverse (9154), we get a palindrome (451909154).

The spelling of 451900000 in words is "four hundred fifty-one million, nine hundred thousand".