1451449856 has 40 divisors (see below), whose sum is σ = 2970841104. Its totient is φ = 708014080.

The previous prime is 1451449789. The next prime is 1451449859. The reversal of 1451449856 is 6589441541.

It is a super-3 number, since 3×1451449856³ (a number of 28 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1451449856.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1451449859) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13580 + ... + 55563.

Almost surely, 2^1451449856 is an apocalyptic number.

1451449856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1451449856 is an abundant number, since it is smaller than the sum of its proper divisors (1519391248).

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

1451449856 is an frugal number, since it uses more digits than its factorization.

1451449856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69202 (or 69186 counting only the distinct ones).

The product of its digits is 691200, while the sum is 47.

The square root of 1451449856 is about 38097.8983147365. The cubic root of 1451449856 is about 1132.2283165603.

The spelling of 1451449856 in words is "one billion, four hundred fifty-one million, four hundred forty-nine thousand, eight hundred fifty-six".