1455451820 has 48 divisors (see below), whose sum is σ = 3129477120. Its totient is φ = 568334784.

The previous prime is 1455451807. The next prime is 1455451849. The reversal of 1455451820 is 281545541.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 410897 + ... + 414423.

It is an arithmetic number, because the mean of its divisors is an integer number (65197440).

Almost surely, 2^1455451820 is an apocalyptic number.

1455451820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1455451820 is an abundant number, since it is smaller than the sum of its proper divisors (1674025300).

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

1455451820 is a wasteful number, since it uses less digits than its factorization.

1455451820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4022 (or 4020 counting only the distinct ones).

The product of its (nonzero) digits is 32000, while the sum is 35.

The square root of 1455451820 is about 38150.3842706728. The cubic root of 1455451820 is about 1133.2679618196.

The spelling of 1455451820 in words is "one billion, four hundred fifty-five million, four hundred fifty-one thousand, eight hundred twenty".