1455491500 has 48 divisors (see below), whose sum is σ = 3188334240. Its totient is φ = 580449600.

The previous prime is 1455491491. The next prime is 1455491503. The reversal of 1455491500 is 51945541.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1455491503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 169306 + ... + 177694.

It is an arithmetic number, because the mean of its divisors is an integer number (66423630).

Almost surely, 2^1455491500 is an apocalyptic number.

1455491500 is a gapful number since it is divisible by the number (10) 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 1455491500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1594167120).

1455491500 is an abundant number, since it is smaller than the sum of its proper divisors (1732842740).

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

1455491500 is a wasteful number, since it uses less digits than its factorization.

1455491500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8755 (or 8743 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 34.

The square root of 1455491500 is about 38150.9043143148. The cubic root of 1455491500 is about 1133.2782604919.

The spelling of 1455491500 in words is "one billion, four hundred fifty-five million, four hundred ninety-one thousand, five hundred".