1971674339 has 4 divisors (see below), whose sum is σ = 1971978840. Its totient is φ = 1971369840.

The previous prime is 1971674329. The next prime is 1971674351. The reversal of 1971674339 is 9334761791.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9334761791 = 47 ⋅198611953.

It is a cyclic number.

It is not a de Polignac number, because 1971674339 - 2⁴ = 1971674323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1971674329) 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, 142322 + ... + 155559.

It is an arithmetic number, because the mean of its divisors is an integer number (492994710).

Almost surely, 2^1971674339 is an apocalyptic number.

1971674339 is a deficient number, since it is larger than the sum of its proper divisors (304501).

1971674339 is an equidigital number, since it uses as much as digits as its factorization.

1971674339 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304500.

The product of its digits is 857304, while the sum is 50.

The square root of 1971674339 is about 44403.5397125049. The cubic root of 1971674339 is about 1253.9447305058.

The spelling of 1971674339 in words is "one billion, nine hundred seventy-one million, six hundred seventy-four thousand, three hundred thirty-nine".