1039493618 has 8 divisors (see below), whose sum is σ = 1565933148. Its totient is φ = 517515904.

The previous prime is 1039493617. The next prime is 1039493621. The reversal of 1039493618 is 8163949301.

It can be written as a sum of positive squares in 2 ways, for example, as 1031501689 + 7991929 = 32117^2 + 2827^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (1039493617) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1114871 + ... + 1115802.

Almost surely, 2^1039493618 is an apocalyptic number.

1039493618 is a deficient number, since it is larger than the sum of its proper divisors (526439530).

1039493618 is a wasteful number, since it uses less digits than its factorization.

1039493618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2230908.

The product of its (nonzero) digits is 139968, while the sum is 44.

The square root of 1039493618 is about 32241.1789176513. The cubic root of 1039493618 is about 1012.9949394048.

The spelling of 1039493618 in words is "one billion, thirty-nine million, four hundred ninety-three thousand, six hundred eighteen".