1969041645000 has 120 divisors (see below), whose sum is σ = 6663893426190. Its totient is φ = 525077760000.

The previous prime is 1969041644993. The next prime is 1969041645001. The reversal of 1969041645000 is 5461409691.

It is a happy number.

1969041645000 is a `hidden beast` number, since 19 + 6 + 90 + 41 + 6 + 4 + 500 + 0 = 666.

It can be written as a sum of positive squares in 5 ways, for example, as 54344001924 + 1914697643076 = 233118^2 + 1383726^2 .

It is a tau number, because it is divible by the number of its divisors (120).

It is a super-3 number, since 3×1969041645000³ (a number of 38 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (1969041645001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 21833241 + ... + 21923240.

Almost surely, 2^{1969041645000} is an apocalyptic number.

1969041645000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1969041645000 is an abundant number, since it is smaller than the sum of its proper divisors (4694851781190).

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

1969041645000 is a wasteful number, since it uses less digits than its factorization.

1969041645000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43756513 (or 43756491 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 45.

It can be divided in two parts, 1969041 and 645000, that added together give a triangular number (2614041 = T₂₂₈₆).

The spelling of 1969041645000 in words is "one trillion, nine hundred sixty-nine billion, forty-one million, six hundred forty-five thousand".