1451657856 has 128 divisors (see below), whose sum is σ = 4220890560. Its totient is φ = 438394880.

The previous prime is 1451657833. The next prime is 1451657861. The reversal of 1451657856 is 6587561541.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2352460 + ... + 2353076.

Almost surely, 2^1451657856 is an apocalyptic number.

1451657856 is a gapful number since it is divisible by the number (16) 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 1451657856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2110445280).

1451657856 is an abundant number, since it is smaller than the sum of its proper divisors (2769232704).

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

1451657856 is a wasteful number, since it uses less digits than its factorization.

1451657856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1202 (or 1190 counting only the distinct ones).

The product of its digits is 1008000, while the sum is 48.

The square root of 1451657856 is about 38100.6280263200. The cubic root of 1451657856 is about 1132.2823986310.

The spelling of 1451657856 in words is "one billion, four hundred fifty-one million, six hundred fifty-seven thousand, eight hundred fifty-six".