1858496638063 has 12 divisors (see below), whose sum is σ = 2012771096280. Its totient is φ = 1715265847776.

The previous prime is 1858496638057. The next prime is 1858496638073. The reversal of 1858496638063 is 3608366948581.

It is not a de Polignac number, because 1858496638063 - 2⁹ = 1858496637551 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1858496638063.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1858496638073) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 219120 + ... + 1940362.

It is an arithmetic number, because the mean of its divisors is an integer number (167730924690).

Almost surely, 2^{1858496638063} is an apocalyptic number.

1858496638063 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1858496638063 is a deficient number, since it is larger than the sum of its proper divisors (154274458217).

1858496638063 is a wasteful number, since it uses less digits than its factorization.

1858496638063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1727658 (or 1727645 counting only the distinct ones).

The product of its (nonzero) digits is 179159040, while the sum is 67.

The spelling of 1858496638063 in words is "one trillion, eight hundred fifty-eight billion, four hundred ninety-six million, six hundred thirty-eight thousand, sixty-three".