1518788494 has 4 divisors (see below), whose sum is σ = 2278182744. Its totient is φ = 759394246.

The previous prime is 1518788489. The next prime is 1518788521. The reversal of 1518788494 is 4948878151.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 379697122 + ... + 379697125.

It is an arithmetic number, because the mean of its divisors is an integer number (569545686).

Almost surely, 2^1518788494 is an apocalyptic number.

1518788494 is a deficient number, since it is larger than the sum of its proper divisors (759394250).

1518788494 is an equidigital number, since it uses as much as digits as its factorization.

1518788494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 759394249.

The product of its digits is 2580480, while the sum is 55.

The square root of 1518788494 is about 38971.6370454206. The cubic root of 1518788494 is about 1149.4738598878.

The spelling of 1518788494 in words is "one billion, five hundred eighteen million, seven hundred eighty-eight thousand, four hundred ninety-four".