12519418 has 4 divisors (see below), whose sum is σ = 18779130. Its totient is φ = 6259708.

The previous prime is 12519401. The next prime is 12519421. The reversal of 12519418 is 81491521.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 81491521 = 107 ⋅761603.

It can be written as a sum of positive squares in only one way, i.e., 12131289 + 388129 = 3483^2 + 623^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 12519418.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3129853 + ... + 3129856.

Almost surely, 2^12519418 is an apocalyptic number.

12519418 is a deficient number, since it is larger than the sum of its proper divisors (6259712).

12519418 is an equidigital number, since it uses as much as digits as its factorization.

12519418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6259711.

The product of its digits is 2880, while the sum is 31.

The square root of 12519418 is about 3538.2789601726. The cubic root of 12519418 is about 232.1995533360.

The spelling of 12519418 in words is "twelve million, five hundred nineteen thousand, four hundred eighteen".