1540030445 has 8 divisors (see below), whose sum is σ = 1849933944. Its totient is φ = 1230759424.

The previous prime is 1540030441. The next prime is 1540030451. The reversal of 1540030445 is 5440300451.

It can be written as a sum of positive squares in 4 ways, for example, as 682829161 + 857201284 = 26131^2 + 29278^2 .

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 1540030445 - 2² = 1540030441 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 (1540030441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 152744 + ... + 162513.

It is an arithmetic number, because the mean of its divisors is an integer number (231241743).

Almost surely, 2^1540030445 is an apocalyptic number.

It is an amenable number.

1540030445 is a deficient number, since it is larger than the sum of its proper divisors (309903499).

1540030445 is an equidigital number, since it uses as much as digits as its factorization.

1540030445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316239.

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 1540030445 is about 39243.2216439986. The cubic root of 1540030445 is about 1154.8079601757.

Adding to 1540030445 its reverse (5440300451), we get a palindrome (6980330896).

The spelling of 1540030445 in words is "one billion, five hundred forty million, thirty thousand, four hundred forty-five".