1869072068720 has 40 divisors (see below), whose sum is σ = 4374371346720. Its totient is φ = 742677638400.

The previous prime is 1869072068711. The next prime is 1869072068723. The reversal of 1869072068720 is 278602709681.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1869072068723) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77350175 + ... + 77374334.

It is an arithmetic number, because the mean of its divisors is an integer number (109359283668).

Almost surely, 2^{1869072068720} is an apocalyptic number.

1869072068720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1869072068720 is an abundant number, since it is smaller than the sum of its proper divisors (2505299278000).

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

1869072068720 is a wasteful number, since it uses less digits than its factorization.

1869072068720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154724673 (or 154724667 counting only the distinct ones).

The product of its (nonzero) digits is 4064256, while the sum is 56.

The spelling of 1869072068720 in words is "one trillion, eight hundred sixty-nine billion, seventy-two million, sixty-eight thousand, seven hundred twenty".