1463978618 has 8 divisors (see below), whose sum is σ = 2199395700. Its totient is φ = 730846720.

The previous prime is 1463978617. The next prime is 1463978639. The reversal of 1463978618 is 8168793641.

It can be written as a sum of positive squares in 2 ways, for example, as 1321104409 + 142874209 = 36347^2 + 11953^2 .

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

It is a super-2 number, since 2×1463978618² = 4286466787922379848, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1463978618.

It is not an unprimeable number, because it can be changed into a prime (1463978617) 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, 569693 + ... + 572256.

Almost surely, 2^1463978618 is an apocalyptic number.

1463978618 is a deficient number, since it is larger than the sum of its proper divisors (735417082).

1463978618 is a wasteful number, since it uses less digits than its factorization.

1463978618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1142592.

The product of its digits is 1741824, while the sum is 53.

The square root of 1463978618 is about 38261.9735246367. The cubic root of 1463978618 is about 1135.4767461636.

The spelling of 1463978618 in words is "one billion, four hundred sixty-three million, nine hundred seventy-eight thousand, six hundred eighteen".