1540243332 has 36 divisors (see below), whose sum is σ = 3894583420. Its totient is φ = 513257472.

The previous prime is 1540243307. The next prime is 1540243349. The reversal of 1540243332 is 2333420451.

It can be written as a sum of positive squares in 2 ways, for example, as 303595776 + 1236647556 = 17424^2 + 35166^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a junction number, because it is equal to n+sod(n) for n = 1540243296 and 1540243305.

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, 231768 + ... + 238320.

Almost surely, 2^1540243332 is an apocalyptic number.

1540243332 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1540243332 is an abundant number, since it is smaller than the sum of its proper divisors (2354340088).

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

1540243332 is a wasteful number, since it uses less digits than its factorization.

1540243332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13092 (or 13087 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 27.

The square root of 1540243332 is about 39245.9339549972. The cubic root of 1540243332 is about 1154.8611695729.

Adding to 1540243332 its reverse (2333420451), we get a palindrome (3873663783).

The spelling of 1540243332 in words is "one billion, five hundred forty million, two hundred forty-three thousand, three hundred thirty-two".