1540747673 has 8 divisors (see below), whose sum is σ = 1582889088. Its totient is φ = 1498632624.

The previous prime is 1540747661. The next prime is 1540747693. The reversal of 1540747673 is 3767470451.

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 1540747673 - 2⁴ = 1540747657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1540747613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 193040 + ... + 200862.

It is an arithmetic number, because the mean of its divisors is an integer number (197861136).

Almost surely, 2^1540747673 is an apocalyptic number.

It is an amenable number.

1540747673 is a deficient number, since it is larger than the sum of its proper divisors (42141415).

1540747673 is an equidigital number, since it uses as much as digits as its factorization.

1540747673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13183.

The product of its (nonzero) digits is 493920, while the sum is 44.

The square root of 1540747673 is about 39252.3588208403. The cubic root of 1540747673 is about 1154.9872059951.

The spelling of 1540747673 in words is "one billion, five hundred forty million, seven hundred forty-seven thousand, six hundred seventy-three".