1451840868 has 96 divisors (see below), whose sum is σ = 4158846720. Its totient is φ = 435663360.

The previous prime is 1451840861. The next prime is 1451840879. The reversal of 1451840868 is 8680481541.

1451840868 is a `hidden beast` number, since 14 + 518 + 40 + 86 + 8 = 666.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (1451840861) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25038 + ... + 59418.

It is an arithmetic number, because the mean of its divisors is an integer number (43321320).

Almost surely, 2^1451840868 is an apocalyptic number.

1451840868 is a gapful number since it is divisible by the number (18) 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 1451840868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2079423360).

1451840868 is an abundant number, since it is smaller than the sum of its proper divisors (2707005852).

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

1451840868 is a wasteful number, since it uses less digits than its factorization.

1451840868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34434 (or 34426 counting only the distinct ones).

The product of its (nonzero) digits is 245760, while the sum is 45.

The square root of 1451840868 is about 38103.0296433236. The cubic root of 1451840868 is about 1132.3299793006.

The spelling of 1451840868 in words is "one billion, four hundred fifty-one million, eight hundred forty thousand, eight hundred sixty-eight".