2194015421940 has 48 divisors (see below), whose sum is σ = 6227397210048. Its totient is φ = 577056109824.

The previous prime is 2194015421921. The next prime is 2194015421999. The reversal of 2194015421940 is 491245104912.

It is a junction number, because it is equal to n+sod(n) for n = 2194015421892 and 2194015421901.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 250454002 + ... + 250462761.

It is an arithmetic number, because the mean of its divisors is an integer number (129737441876).

Almost surely, 2^{2194015421940} is an apocalyptic number.

2194015421940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2194015421940 is an abundant number, since it is smaller than the sum of its proper divisors (4033381788108).

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

2194015421940 is a wasteful number, since it uses less digits than its factorization.

2194015421940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 500916848 (or 500916846 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 42.

The spelling of 2194015421940 in words is "two trillion, one hundred ninety-four billion, fifteen million, four hundred twenty-one thousand, nine hundred forty".