1518230402 has 16 divisors (see below), whose sum is σ = 2454573240. Its totient is φ = 700136832.

The previous prime is 1518230387. The next prime is 1518230423. The reversal of 1518230402 is 2040328151.

It can be written as a sum of positive squares in 4 ways, for example, as 1288738201 + 229492201 = 35899^2 + 15149^2 .

It is a Harshad number since it is a multiple of its sum of digits (26).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8198 + ... + 55710.

Almost surely, 2^1518230402 is an apocalyptic number.

1518230402 is a deficient number, since it is larger than the sum of its proper divisors (936342838).

1518230402 is a wasteful number, since it uses less digits than its factorization.

1518230402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48757.

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 1518230402 is about 38964.4761545693. The cubic root of 1518230402 is about 1149.3330479270. Note that the first 3 decimals are identical.

Adding to 1518230402 its reverse (2040328151), we get a palindrome (3558558553).

The spelling of 1518230402 in words is "one billion, five hundred eighteen million, two hundred thirty thousand, four hundred two".