1973138186575 has 12 divisors (see below), whose sum is σ = 2446710237328. Its totient is φ = 1578498364800.

The previous prime is 1973138186429. The next prime is 1973138186597. The reversal of 1973138186575 is 5756818313791.

It is not a de Polignac number, because 1973138186575 - 2²³ = 1973129797967 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4460599 + ... + 4882951.

Almost surely, 2^{1973138186575} is an apocalyptic number.

1973138186575 is a deficient number, since it is larger than the sum of its proper divisors (473572050753).

1973138186575 is a wasteful number, since it uses less digits than its factorization.

1973138186575 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 609234 (or 609229 counting only the distinct ones).

The product of its digits is 38102400, while the sum is 64.

The spelling of 1973138186575 in words is "one trillion, nine hundred seventy-three billion, one hundred thirty-eight million, one hundred eighty-six thousand, five hundred seventy-five".