1451044840 has 48 divisors (see below), whose sum is σ = 3797892900. Its totient is φ = 497500416.

The previous prime is 1451044813. The next prime is 1451044849. The reversal of 1451044840 is 484401541.

It can be written as a sum of positive squares in 2 ways, for example, as 1332104004 + 118940836 = 36498^2 + 10906^2 .

It is a super-2 number, since 2×1451044840² = 4211062255381251200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1451044849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 368205 + ... + 372124.

Almost surely, 2^1451044840 is an apocalyptic number.

1451044840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1451044840 is an abundant number, since it is smaller than the sum of its proper divisors (2346848060).

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

1451044840 is a wasteful number, since it uses less digits than its factorization.

1451044840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 740354 (or 740343 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 31.

The square root of 1451044840 is about 38092.5824800577. The cubic root of 1451044840 is about 1132.1229935409.

The spelling of 1451044840 in words is "one billion, four hundred fifty-one million, forty-four thousand, eight hundred forty".