1970538143 has 4 divisors (see below), whose sum is σ = 2252043600. Its totient is φ = 1689032688.

The previous prime is 1970538091. The next prime is 1970538149. The reversal of 1970538143 is 3418350791.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3418350791 = 59 ⋅57938149.

It is not a de Polignac number, because 1970538143 - 2¹⁰ = 1970537119 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1970538143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1970538149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 140752718 + ... + 140752731.

It is an arithmetic number, because the mean of its divisors is an integer number (563010900).

Almost surely, 2^1970538143 is an apocalyptic number.

1970538143 is a deficient number, since it is larger than the sum of its proper divisors (281505457).

1970538143 is an equidigital number, since it uses as much as digits as its factorization.

1970538143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281505456.

The product of its (nonzero) digits is 90720, while the sum is 41.

The square root of 1970538143 is about 44390.7438887883. The cubic root of 1970538143 is about 1253.7038183840.

The spelling of 1970538143 in words is "one billion, nine hundred seventy million, five hundred thirty-eight thousand, one hundred forty-three".