1491530118 has 32 divisors (see below), whose sum is σ = 3231564000. Its totient is φ = 458928288.

The previous prime is 1491530113. The next prime is 1491530119. The reversal of 1491530118 is 8110351941.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1491530113) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43393 + ... + 69756.

It is an arithmetic number, because the mean of its divisors is an integer number (100986375).

Almost surely, 2^1491530118 is an apocalyptic number.

1491530118 is an abundant number, since it is smaller than the sum of its proper divisors (1740033882).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1491530118 is a wasteful number, since it uses less digits than its factorization.

1491530118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113193 (or 113167 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 33.

The square root of 1491530118 is about 38620.3329607604. The cubic root of 1491530118 is about 1142.5555978798. Note that the first 4 decimals are identical.

The spelling of 1491530118 in words is "one billion, four hundred ninety-one million, five hundred thirty thousand, one hundred eighteen".