1992019494780 has 432 divisors, whose sum is σ = 7572459288576. Its totient is φ = 414709217280.

The previous prime is 1992019494767. The next prime is 1992019494799. The reversal of 1992019494780 is 874949102991.

1992019494780 is a `hidden beast` number, since 1 + 99 + 20 + 19 + 49 + 478 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 11200107 + ... + 11376573.

Almost surely, 2^{1992019494780} is an apocalyptic number.

1992019494780 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 1992019494780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3786229644288).

1992019494780 is an abundant number, since it is smaller than the sum of its proper divisors (5580439793796).

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

1992019494780 is a wasteful number, since it uses less digits than its factorization.

1992019494780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176554 (or 176532 counting only the distinct ones).

The product of its (nonzero) digits is 11757312, while the sum is 63.

The spelling of 1992019494780 in words is "one trillion, nine hundred ninety-two billion, nineteen million, four hundred ninety-four thousand, seven hundred eighty".