1505533983 has 4 divisors (see below), whose sum is σ = 2007378648. Its totient is φ = 1003689320.

The previous prime is 1505533979. The next prime is 1505533987. The reversal of 1505533983 is 3893355051.

1505533983 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3893355051 = 3 ⋅1297785017.

It is an interprime number because it is at equal distance from previous prime (1505533979) and next prime (1505533987).

It is a cyclic number.

It is not a de Polignac number, because 1505533983 - 2² = 1505533979 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1505533987) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 250922328 + ... + 250922333.

It is an arithmetic number, because the mean of its divisors is an integer number (501844662).

Almost surely, 2^1505533983 is an apocalyptic number.

1505533983 is a deficient number, since it is larger than the sum of its proper divisors (501844665).

1505533983 is an equidigital number, since it uses as much as digits as its factorization.

1505533983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 501844664.

The product of its (nonzero) digits is 243000, while the sum is 42.

The square root of 1505533983 is about 38801.2111022324. The cubic root of 1505533983 is about 1146.1202547040.

The spelling of 1505533983 in words is "one billion, five hundred five million, five hundred thirty-three thousand, nine hundred eighty-three".