1533487880 has 32 divisors (see below), whose sum is σ = 3508833600. Its totient is φ = 602997696.

The previous prime is 1533487877. The next prime is 1533487883. The reversal of 1533487880 is 887843351.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1533487877) and next prime (1533487883).

It is not an unprimeable number, because it can be changed into a prime (1533487883) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 322532 + ... + 327251.

It is an arithmetic number, because the mean of its divisors is an integer number (109651050).

Almost surely, 2^1533487880 is an apocalyptic number.

1533487880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1533487880 is an abundant number, since it is smaller than the sum of its proper divisors (1975345720).

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

1533487880 is a wasteful number, since it uses less digits than its factorization.

1533487880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 649853 (or 649849 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 47.

The square root of 1533487880 is about 39159.7737480696. The cubic root of 1533487880 is about 1153.1703019097.

The spelling of 1533487880 in words is "one billion, five hundred thirty-three million, four hundred eighty-seven thousand, eight hundred eighty".