1947210117492 has 24 divisors (see below), whose sum is σ = 4544583363936. Its totient is φ = 648913883488.

The previous prime is 1947210117473. The next prime is 1947210117499. The reversal of 1947210117492 is 2947110127491.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1947210117499) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19467498 + ... + 19567265.

It is an arithmetic number, because the mean of its divisors is an integer number (189357640164).

Almost surely, 2^{1947210117492} is an apocalyptic number.

1947210117492 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1947210117492 is an abundant number, since it is smaller than the sum of its proper divisors (2597373246444).

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

1947210117492 is a wasteful number, since it uses less digits than its factorization.

1947210117492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39038927 (or 39038925 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 48.

Subtracting 1947210117492 from its reverse (2947110127491), we obtain a palindrome (999900009999).

The spelling of 1947210117492 in words is "one trillion, nine hundred forty-seven billion, two hundred ten million, one hundred seventeen thousand, four hundred ninety-two".