1540452285 has 24 divisors (see below), whose sum is σ = 2671492824. Its totient is φ = 821151360.

The previous prime is 1540452269. The next prime is 1540452289. The reversal of 1540452285 is 5822540451.

1540452285 is a `hidden beast` number, since 1 + 54 + 0 + 4 + 522 + 85 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 518882841 + 1021569444 = 22779^2 + 31962^2 .

It is not a de Polignac number, because 1540452285 - 2⁴ = 1540452269 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1540452289) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 92239 + ... + 107651.

It is an arithmetic number, because the mean of its divisors is an integer number (111312201).

Almost surely, 2^1540452285 is an apocalyptic number.

1540452285 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1540452285 is a deficient number, since it is larger than the sum of its proper divisors (1131040539).

1540452285 is a wasteful number, since it uses less digits than its factorization.

1540452285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17645 (or 17642 counting only the distinct ones).

The product of its (nonzero) digits is 64000, while the sum is 36.

The square root of 1540452285 is about 39248.5959621488. The cubic root of 1540452285 is about 1154.9133909308.

The spelling of 1540452285 in words is "one billion, five hundred forty million, four hundred fifty-two thousand, two hundred eighty-five".