1534721085 has 12 divisors (see below), whose sum is σ = 2660183292. Its totient is φ = 818517888.

The previous prime is 1534721077. The next prime is 1534721117. The reversal of 1534721085 is 5801274351.

It can be written as a sum of positive squares in 2 ways, for example, as 514110276 + 1020610809 = 22674^2 + 31947^2 .

It is not a de Polignac number, because 1534721085 - 2³ = 1534721077 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17052412 + ... + 17052501.

It is an arithmetic number, because the mean of its divisors is an integer number (221681941).

Almost surely, 2^1534721085 is an apocalyptic number.

1534721085 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1534721085 is a deficient number, since it is larger than the sum of its proper divisors (1125462207).

1534721085 is a wasteful number, since it uses less digits than its factorization.

1534721085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34104924 (or 34104921 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 36.

The square root of 1534721085 is about 39175.5163973623. The cubic root of 1534721085 is about 1153.4793390971.

The spelling of 1534721085 in words is "one billion, five hundred thirty-four million, seven hundred twenty-one thousand, eighty-five".