1896437881140 has 144 divisors (see below), whose sum is σ = 6143832260160. Its totient is φ = 435545510400.

The previous prime is 1896437881133. The next prime is 1896437881141. The reversal of 1896437881140 is 411887346981.

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 not an unprimeable number, because it can be changed into a prime (1896437881141) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6736201 + ... + 7012080.

Almost surely, 2^{1896437881140} is an apocalyptic number.

1896437881140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1896437881140 is an abundant number, since it is smaller than the sum of its proper divisors (4247394379020).

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

1896437881140 is a wasteful number, since it uses less digits than its factorization.

1896437881140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13748334 (or 13748321 counting only the distinct ones).

The product of its (nonzero) digits is 9289728, while the sum is 60.

The spelling of 1896437881140 in words is "one trillion, eight hundred ninety-six billion, four hundred thirty-seven million, eight hundred eighty-one thousand, one hundred forty".