974195749 has 4 divisors (see below), whose sum is σ = 976365900. Its totient is φ = 972025600.

The previous prime is 974195741. The next prime is 974195767. The reversal of 974195749 is 947591479.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 947591479 = 25423 ⋅37273.

It can be written as a sum of positive squares in 2 ways, for example, as 233539524 + 740656225 = 15282^2 + 27215^2 .

It is a cyclic number.

It is not a de Polignac number, because 974195749 - 2³ = 974195741 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 974195749.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (974195741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1084402 + ... + 1085299.

It is an arithmetic number, because the mean of its divisors is an integer number (244091475).

Almost surely, 2^974195749 is an apocalyptic number.

It is an amenable number.

974195749 is a deficient number, since it is larger than the sum of its proper divisors (2170151).

974195749 is a wasteful number, since it uses less digits than its factorization.

974195749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2170150.

The product of its digits is 2857680, while the sum is 55.

The square root of 974195749 is about 31212.1090123689. The cubic root of 974195749 is about 991.3235194102.

The spelling of 974195749 in words is "nine hundred seventy-four million, one hundred ninety-five thousand, seven hundred forty-nine".