1860345995640 has 128 divisors (see below), whose sum is σ = 6096714393600. Its totient is φ = 450377464320.

The previous prime is 1860345995621. The next prime is 1860345995659. The reversal of 1860345995640 is 465995430681.

It is an interprime number because it is at equal distance from previous prime (1860345995621) and next prime (1860345995659).

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

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6201 + ... + 1928919.

It is an arithmetic number, because the mean of its divisors is an integer number (47630581200).

Almost surely, 2^{1860345995640} is an apocalyptic number.

1860345995640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1860345995640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3048357196800).

1860345995640 is an abundant number, since it is smaller than the sum of its proper divisors (4236368397960).

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

1860345995640 is a wasteful number, since it uses less digits than its factorization.

1860345995640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1923477 (or 1923473 counting only the distinct ones).

The product of its (nonzero) digits is 27993600, while the sum is 60.

The spelling of 1860345995640 in words is "one trillion, eight hundred sixty billion, three hundred forty-five million, nine hundred ninety-five thousand, six hundred forty".