1531652265 has 48 divisors (see below), whose sum is σ = 3119014080. Its totient is φ = 685491840.

The previous prime is 1531652261. The next prime is 1531652329. The reversal of 1531652265 is 5622561351.

1531652265 is a `hidden beast` number, since 1 + 531 + 65 + 2 + 2 + 65 = 666.

It is not a de Polignac number, because 1531652265 - 2² = 1531652261 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1531652261) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 112575 + ... + 125444.

It is an arithmetic number, because the mean of its divisors is an integer number (64979460).

Almost surely, 2^1531652265 is an apocalyptic number.

1531652265 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1531652265 is an abundant number, since it is smaller than the sum of its proper divisors (1587361815).

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

1531652265 is a wasteful number, since it uses less digits than its factorization.

1531652265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238054 (or 238051 counting only the distinct ones).

The product of its digits is 54000, while the sum is 36.

The square root of 1531652265 is about 39136.3292223479. The cubic root of 1531652265 is about 1152.7099957234.

It can be divided in two parts, 1531 and 652265, that added together give a triangular number (653796 = T₁₁₄₃).

The spelling of 1531652265 in words is "one billion, five hundred thirty-one million, six hundred fifty-two thousand, two hundred sixty-five".