1943796117497 has 4 divisors (see below), whose sum is σ = 2093318895780. Its totient is φ = 1794273339216.

The previous prime is 1943796117493. The next prime is 1943796117521. The reversal of 1943796117497 is 7947116973491.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 581839430656 + 1361956686841 = 762784^2 + 1167029^2 .

It is a cyclic number.

It is not a de Polignac number, because 1943796117497 - 2² = 1943796117493 is a prime.

It is a super-2 number, since 2×1943796117497² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1943796117493) 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, 74761389122 + ... + 74761389147.

It is an arithmetic number, because the mean of its divisors is an integer number (523329723945).

Almost surely, 2^{1943796117497} is an apocalyptic number.

It is an amenable number.

1943796117497 is a deficient number, since it is larger than the sum of its proper divisors (149522778283).

1943796117497 is a wasteful number, since it uses less digits than its factorization.

1943796117497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149522778282.

The product of its digits is 72013536, while the sum is 68.

The spelling of 1943796117497 in words is "one trillion, nine hundred forty-three billion, seven hundred ninety-six million, one hundred seventeen thousand, four hundred ninety-seven".