1616161694 has 16 divisors (see below), whose sum is σ = 2815983456. Its totient is φ = 681285600.

The previous prime is 1616161691. The next prime is 1616161709. The reversal of 1616161694 is 4961616161.

It is a super-3 number, since 3×1616161694³ (a number of 29 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1616161691) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 945377 + ... + 947084.

It is an arithmetic number, because the mean of its divisors is an integer number (175998966).

Almost surely, 2^1616161694 is an apocalyptic number.

1616161694 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1616161694 is a deficient number, since it is larger than the sum of its proper divisors (1199821762).

1616161694 is a wasteful number, since it uses less digits than its factorization.

1616161694 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1892531.

The product of its digits is 46656, while the sum is 41.

The square root of 1616161694 is about 40201.5135784711. The cubic root of 1616161694 is about 1173.5319995653.

The spelling of 1616161694 in words is "one billion, six hundred sixteen million, one hundred sixty-one thousand, six hundred ninety-four".