1540252549 has 8 divisors (see below), whose sum is σ = 1680637248. Its totient is φ = 1399928160.

The previous prime is 1540252541. The next prime is 1540252573. The reversal of 1540252549 is 9452520451.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1540252549 - 2³ = 1540252541 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 (1540252541) 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 7 ways as a sum of consecutive naturals, for example, 50904 + ... + 75310.

It is an arithmetic number, because the mean of its divisors is an integer number (210079656).

Almost surely, 2^1540252549 is an apocalyptic number.

It is an amenable number.

1540252549 is a deficient number, since it is larger than the sum of its proper divisors (140384699).

1540252549 is a wasteful number, since it uses less digits than its factorization.

1540252549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30155.

The product of its (nonzero) digits is 72000, while the sum is 37.

The square root of 1540252549 is about 39246.0513809988. The cubic root of 1540252549 is about 1154.8634731774.

The spelling of 1540252549 in words is "one billion, five hundred forty million, two hundred fifty-two thousand, five hundred forty-nine".