1691337742 has 8 divisors (see below), whose sum is σ = 2618845632. Its totient is φ = 818389200.

The previous prime is 1691337737. The next prime is 1691337743. The reversal of 1691337742 is 2477331961.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1691337743) 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, 13639759 + ... + 13639882.

It is an arithmetic number, because the mean of its divisors is an integer number (327355704).

Almost surely, 2^1691337742 is an apocalyptic number.

1691337742 is a deficient number, since it is larger than the sum of its proper divisors (927507890).

1691337742 is a wasteful number, since it uses less digits than its factorization.

1691337742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27279674.

The product of its digits is 190512, while the sum is 43.

The square root of 1691337742 is about 41125.8767930849. The cubic root of 1691337742 is about 1191.4526294664.

The spelling of 1691337742 in words is "one billion, six hundred ninety-one million, three hundred thirty-seven thousand, seven hundred forty-two".