1535481564 has 48 divisors (see below), whose sum is σ = 3774930432. Its totient is φ = 484811712.

The previous prime is 1535481557. The next prime is 1535481581. The reversal of 1535481564 is 4651845351.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1422 + ... + 55434.

It is an arithmetic number, because the mean of its divisors is an integer number (78644384).

Almost surely, 2^1535481564 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1535481564, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1887465216).

1535481564 is an abundant number, since it is smaller than the sum of its proper divisors (2239448868).

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

1535481564 is a wasteful number, since it uses less digits than its factorization.

1535481564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54146 (or 54144 counting only the distinct ones).

The product of its digits is 288000, while the sum is 42.

The square root of 1535481564 is about 39185.2212447499. The cubic root of 1535481564 is about 1153.6698301630.

The spelling of 1535481564 in words is "one billion, five hundred thirty-five million, four hundred eighty-one thousand, five hundred sixty-four".