43149274169 has 4 divisors (see below), whose sum is σ = 43342768896. Its totient is φ = 42955779444.

The previous prime is 43149274061. The next prime is 43149274219. The reversal of 43149274169 is 96147294134.

It is a happy number.

43149274169 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 96147294134 = 2 ⋅48073647067.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43149274169 is a prime.

It is a super-2 number, since 2×43149274169² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43149274669) 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, 96747029 + ... + 96747474.

It is an arithmetic number, because the mean of its divisors is an integer number (10835692224).

Almost surely, 2^43149274169 is an apocalyptic number.

It is an amenable number.

43149274169 is a deficient number, since it is larger than the sum of its proper divisors (193494727).

43149274169 is a wasteful number, since it uses less digits than its factorization.

43149274169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193494726.

The product of its digits is 1306368, while the sum is 50.

The spelling of 43149274169 in words is "forty-three billion, one hundred forty-nine million, two hundred seventy-four thousand, one hundred sixty-nine".