1540161345 has 8 divisors (see below), whose sum is σ = 2464258176. Its totient is φ = 821419376.

The previous prime is 1540161307. The next prime is 1540161439. The reversal of 1540161345 is 5431610451.

It is a happy number.

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 1540161345 - 2⁸ = 1540161089 is a prime.

It is a Curzon number.

It is an unprimeable number.

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, 51338697 + ... + 51338726.

It is an arithmetic number, because the mean of its divisors is an integer number (308032272).

Almost surely, 2^1540161345 is an apocalyptic number.

1540161345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1540161345 is a deficient number, since it is larger than the sum of its proper divisors (924096831).

1540161345 is a wasteful number, since it uses less digits than its factorization.

1540161345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102677431.

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 1540161345 is about 39244.8894125082. The cubic root of 1540161345 is about 1154.8406781608.

Adding to 1540161345 its reverse (5431610451), we get a palindrome (6971771796).

The spelling of 1540161345 in words is "one billion, five hundred forty million, one hundred sixty-one thousand, three hundred forty-five".