1974091006 has 4 divisors (see below), whose sum is σ = 2961136512. Its totient is φ = 987045502.

The previous prime is 1974091003. The next prime is 1974091027. The reversal of 1974091006 is 6001904791.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1974091003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 493522750 + ... + 493522753.

It is an arithmetic number, because the mean of its divisors is an integer number (740284128).

Almost surely, 2^1974091006 is an apocalyptic number.

1974091006 is a deficient number, since it is larger than the sum of its proper divisors (987045506).

1974091006 is an equidigital number, since it uses as much as digits as its factorization.

1974091006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 987045505.

The product of its (nonzero) digits is 13608, while the sum is 37.

The square root of 1974091006 is about 44430.7439280505. The cubic root of 1974091006 is about 1254.4568383343.

Adding to 1974091006 its reverse (6001904791), we get a palindrome (7975995797).

The spelling of 1974091006 in words is "one billion, nine hundred seventy-four million, ninety-one thousand, six".