1917650145020 has 12 divisors (see below), whose sum is σ = 4027065304584. Its totient is φ = 767060058000.

The previous prime is 1917650145017. The next prime is 1917650145023. The reversal of 1917650145020 is 205410567191.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1917650145017) and next prime (1917650145023).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1917650145023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47941253606 + ... + 47941253645.

It is an arithmetic number, because the mean of its divisors is an integer number (335588775382).

Almost surely, 2^{1917650145020} is an apocalyptic number.

1917650145020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1917650145020 is an abundant number, since it is smaller than the sum of its proper divisors (2109415159564).

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

1917650145020 is a wasteful number, since it uses less digits than its factorization.

1917650145020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95882507260 (or 95882507258 counting only the distinct ones).

The product of its (nonzero) digits is 75600, while the sum is 41.

The spelling of 1917650145020 in words is "one trillion, nine hundred seventeen billion, six hundred fifty million, one hundred forty-five thousand, twenty".