1691337374534 has 8 divisors (see below), whose sum is σ = 2537024836368. Its totient is φ = 845662429080.

The previous prime is 1691337374491. The next prime is 1691337374561. The reversal of 1691337374534 is 4354737331961.

It is a happy number.

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

It is a super-2 number, since 2×1691337374534² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1691337374534.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2783642 + ... + 3336365.

It is an arithmetic number, because the mean of its divisors is an integer number (317128104546).

Almost surely, 2^{1691337374534} is an apocalyptic number.

1691337374534 is a deficient number, since it is larger than the sum of its proper divisors (845687461834).

1691337374534 is a wasteful number, since it uses less digits than its factorization.

1691337374534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6258190.

The product of its digits is 17146080, while the sum is 56.

The spelling of 1691337374534 in words is "one trillion, six hundred ninety-one billion, three hundred thirty-seven million, three hundred seventy-four thousand, five hundred thirty-four".