1973225189385 has 12 divisors (see below), whose sum is σ = 3420256995012. Its totient is φ = 1052386767648.

The previous prime is 1973225189381. The next prime is 1973225189437. The reversal of 1973225189385 is 5839815223791.

1973225189385 is a `hidden beast` number, since 1 + 9 + 7 + 3 + 22 + 518 + 93 + 8 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1337603276304 + 635621913081 = 1156548^2 + 797259^2 .

It is not a de Polignac number, because 1973225189385 - 2² = 1973225189381 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1973225189381) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21924724282 + ... + 21924724371.

It is an arithmetic number, because the mean of its divisors is an integer number (285021416251).

Almost surely, 2^{1973225189385} is an apocalyptic number.

1973225189385 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1973225189385 is a deficient number, since it is larger than the sum of its proper divisors (1447031805627).

1973225189385 is a wasteful number, since it uses less digits than its factorization.

1973225189385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43849448664 (or 43849448661 counting only the distinct ones).

The product of its digits is 32659200, while the sum is 63.

The spelling of 1973225189385 in words is "one trillion, nine hundred seventy-three billion, two hundred twenty-five million, one hundred eighty-nine thousand, three hundred eighty-five".