1994902008100 has 27 divisors (see below), whose sum is σ = 4328968007091. Its totient is φ = 797955153600.

The previous prime is 1994902008097. The next prime is 1994902008109. The reversal of 1994902008100 is 18002094991.

It is a happy number.

The square root of 1994902008100 is 1412410.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 200781063396 + 1794120944704 = 448086^2 + 1339448^2 .

It is a super-2 number, since 2×1994902008100² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1994902008109) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 14053480 + ... + 14194720.

Almost surely, 2^{1994902008100} is an apocalyptic number.

1994902008100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1994902008100 is the 1412410-th square number.

It is an amenable number.

1994902008100 is an abundant number, since it is smaller than the sum of its proper divisors (2334065998991).

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

1994902008100 is an frugal number, since it uses more digits than its factorization.

1994902008100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282496 (or 141248 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 43.

The spelling of 1994902008100 in words is "one trillion, nine hundred ninety-four billion, nine hundred two million, eight thousand, one hundred".