1540161346 has 4 divisors (see below), whose sum is σ = 2310242022. Its totient is φ = 770080672.

The previous prime is 1540161307. The next prime is 1540161439. The reversal of 1540161346 is 6431610451.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1347257025 + 192904321 = 36705^2 + 13889^2 .

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 as a sum of consecutive naturals, namely, 385040335 + ... + 385040338.

Almost surely, 2^1540161346 is an apocalyptic number.

1540161346 is a deficient number, since it is larger than the sum of its proper divisors (770080676).

1540161346 is an equidigital number, since it uses as much as digits as its factorization.

1540161346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 770080675.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 1540161346 is about 39244.8894252487. The cubic root of 1540161346 is about 1154.8406784107.

Adding to 1540161346 its reverse (6431610451), we get a palindrome (7971771797).

The spelling of 1540161346 in words is "one billion, five hundred forty million, one hundred sixty-one thousand, three hundred forty-six".