1540330234 has 4 divisors (see below), whose sum is σ = 2310495354. Its totient is φ = 770165116.

The previous prime is 1540330223. The next prime is 1540330241. The reversal of 1540330234 is 4320330451.

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., 1440430209 + 99900025 = 37953^2 + 9995^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1540330199 and 1540330208.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 385082557 + ... + 385082560.

Almost surely, 2^1540330234 is an apocalyptic number.

1540330234 is a deficient number, since it is larger than the sum of its proper divisors (770165120).

1540330234 is an equidigital number, since it uses as much as digits as its factorization.

1540330234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 770165119.

The product of its (nonzero) digits is 4320, while the sum is 25.

The square root of 1540330234 is about 39247.0410859214. The cubic root of 1540330234 is about 1154.8828886212.

Adding to 1540330234 its reverse (4320330451), we get a palindrome (5860660685).

The spelling of 1540330234 in words is "one billion, five hundred forty million, three hundred thirty thousand, two hundred thirty-four".