1891380474060 has 384 divisors, whose sum is σ = 7111789977600. Its totient is φ = 363669626880.

The previous prime is 1891380474043. The next prime is 1891380474077. The reversal of 1891380474060 is 604740831981.

It is an interprime number because it is at equal distance from previous prime (1891380474043) and next prime (1891380474077).

It is a junction number, because it is equal to n+sod(n) for n = 1891380473994 and 1891380474012.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 3523996 + ... + 4025084.

It is an arithmetic number, because the mean of its divisors is an integer number (18520286400).

Almost surely, 2^{1891380474060} is an apocalyptic number.

1891380474060 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 1891380474060, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3555894988800).

1891380474060 is an abundant number, since it is smaller than the sum of its proper divisors (5220409503540).

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

1891380474060 is a wasteful number, since it uses less digits than its factorization.

1891380474060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 501181 (or 501179 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 51.

The spelling of 1891380474060 in words is "one trillion, eight hundred ninety-one billion, three hundred eighty million, four hundred seventy-four thousand, sixty".