1544222980 has 24 divisors (see below), whose sum is σ = 3279308760. Its totient is φ = 610748160.

The previous prime is 1544222971. The next prime is 1544222983. The reversal of 1544222980 is 892224451.

It can be written as a sum of positive squares in 4 ways, for example, as 53027524 + 1491195456 = 7282^2 + 38616^2 .

It is a super-2 number, since 2×1544222980² = 4769249223920160800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1544222983) 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 7 ways as a sum of consecutive naturals, for example, 431991 + ... + 435550.

It is an arithmetic number, because the mean of its divisors is an integer number (136637865).

Almost surely, 2^1544222980 is an apocalyptic number.

1544222980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1544222980 is an abundant number, since it is smaller than the sum of its proper divisors (1735085780).

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

1544222980 is a wasteful number, since it uses less digits than its factorization.

1544222980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 867639 (or 867637 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 37.

The square root of 1544222980 is about 39296.6026521378. The cubic root of 1544222980 is about 1155.8549494133.

The spelling of 1544222980 in words is "one billion, five hundred forty-four million, two hundred twenty-two thousand, nine hundred eighty".