1534543901 has 6 divisors (see below), whose sum is σ = 1686730206. Its totient is φ = 1395039800.

The previous prime is 1534543897. The next prime is 1534543919. The reversal of 1534543901 is 1093454351.

It can be written as a sum of positive squares in only one way, i.e., 1406175001 + 128368900 = 37499^2 + 11330^2 .

It is not a de Polignac number, because 1534543901 - 2² = 1534543897 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1534543931) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 6340970 + ... + 6341211.

It is an arithmetic number, because the mean of its divisors is an integer number (281121701).

Almost surely, 2^1534543901 is an apocalyptic number.

1534543901 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1534543901 is a deficient number, since it is larger than the sum of its proper divisors (152186305).

1534543901 is a wasteful number, since it uses less digits than its factorization.

1534543901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12682203 (or 12682192 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 35.

The square root of 1534543901 is about 39173.2549196515. The cubic root of 1534543901 is about 1153.4349475459.

The spelling of 1534543901 in words is "one billion, five hundred thirty-four million, five hundred forty-three thousand, nine hundred one".