1439421972618 has 32 divisors (see below), whose sum is σ = 3292267792896. Its totient is φ = 410993367408.

The previous prime is 1439421972601. The next prime is 1439421972619. The reversal of 1439421972618 is 8162791249341.

It is not an unprimeable number, because it can be changed into a prime (1439421972619) 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, 11187496 + ... + 11315427.

It is an arithmetic number, because the mean of its divisors is an integer number (102883368528).

Almost surely, 2^{1439421972618} is an apocalyptic number.

1439421972618 is an abundant number, since it is smaller than the sum of its proper divisors (1852845820278).

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

1439421972618 is a wasteful number, since it uses less digits than its factorization.

1439421972618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22504458.

The product of its digits is 5225472, while the sum is 57.

The spelling of 1439421972618 in words is "one trillion, four hundred thirty-nine billion, four hundred twenty-one million, nine hundred seventy-two thousand, six hundred eighteen".