974387137 has 4 divisors (see below), whose sum is σ = 987734980. Its totient is φ = 961039296.

The previous prime is 974387123. The next prime is 974387143. The reversal of 974387137 is 731783479.

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 223681936 + 750705201 = 14956^2 + 27399^2 .

It is a cyclic number.

It is not a de Polignac number, because 974387137 - 2²³ = 965998529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (974387177) 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, 6673812 + ... + 6673957.

It is an arithmetic number, because the mean of its divisors is an integer number (246933745).

Almost surely, 2^974387137 is an apocalyptic number.

It is an amenable number.

974387137 is a deficient number, since it is larger than the sum of its proper divisors (13347843).

974387137 is a wasteful number, since it uses less digits than its factorization.

974387137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13347842.

The product of its digits is 889056, while the sum is 49.

The square root of 974387137 is about 31215.1747872729. The cubic root of 974387137 is about 991.3884327854.

The spelling of 974387137 in words is "nine hundred seventy-four million, three hundred eighty-seven thousand, one hundred thirty-seven".