1451323980 has 60 divisors (see below), whose sum is σ = 4552862160. Its totient is φ = 387019296.

The previous prime is 1451323961. The next prime is 1451323981. The reversal of 1451323980 is 893231541.

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (1451323981) 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 19 ways as a sum of consecutive naturals, for example, 446320 + ... + 449559.

It is an arithmetic number, because the mean of its divisors is an integer number (75881036).

Almost surely, 2^1451323980 is an apocalyptic number.

1451323980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1451323980 is an abundant number, since it is smaller than the sum of its proper divisors (3101538180).

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

1451323980 is a wasteful number, since it uses less digits than its factorization.

1451323980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 895900 (or 895889 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 1451323980 is about 38096.2462717785. The cubic root of 1451323980 is about 1132.1955850376.

The spelling of 1451323980 in words is "one billion, four hundred fifty-one million, three hundred twenty-three thousand, nine hundred eighty".