1691677742 has 8 divisors (see below), whose sum is σ = 2579115432. Its totient is φ = 831972600.

The previous prime is 1691677727. The next prime is 1691677831. The reversal of 1691677742 is 2477761961.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6932984 + ... + 6933227.

It is an arithmetic number, because the mean of its divisors is an integer number (322389429).

Almost surely, 2^1691677742 is an apocalyptic number.

1691677742 is a deficient number, since it is larger than the sum of its proper divisors (887437690).

1691677742 is a wasteful number, since it uses less digits than its factorization.

1691677742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13866274.

The product of its digits is 889056, while the sum is 50.

The square root of 1691677742 is about 41130.0102358363. The cubic root of 1691677742 is about 1191.5324610976.

The spelling of 1691677742 in words is "one billion, six hundred ninety-one million, six hundred seventy-seven thousand, seven hundred forty-two".