1863142973439 has 16 divisors (see below), whose sum is σ = 2710052049024. Its totient is φ = 1129166765600.

The previous prime is 1863142973431. The next prime is 1863142973453. The reversal of 1863142973439 is 9343792413681.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1863142973439 - 2³ = 1863142973431 is a prime.

It is a super-3 number, since 3×1863142973439³ (a number of 38 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (60) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1863142973431) 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, 4485172 + ... + 4882934.

It is an arithmetic number, because the mean of its divisors is an integer number (169378253064).

Almost surely, 2^{1863142973439} is an apocalyptic number.

1863142973439 is a deficient number, since it is larger than the sum of its proper divisors (846909075585).

1863142973439 is a wasteful number, since it uses less digits than its factorization.

1863142973439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 539718.

The product of its digits is 23514624, while the sum is 60.

The spelling of 1863142973439 in words is "one trillion, eight hundred sixty-three billion, one hundred forty-two million, nine hundred seventy-three thousand, four hundred thirty-nine".