16161694 has 4 divisors (see below), whose sum is σ = 24242544. Its totient is φ = 8080846.

The previous prime is 16161653. The next prime is 16161727. The reversal of 16161694 is 49616161.

It is a happy number.

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

It is a super-3 number, since 3×16161694³ (a number of 23 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 an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4040422 + ... + 4040425.

It is an arithmetic number, because the mean of its divisors is an integer number (6060636).

Almost surely, 2^16161694 is an apocalyptic number.

16161694 is a deficient number, since it is larger than the sum of its proper divisors (8080850).

16161694 is an equidigital number, since it uses as much as digits as its factorization.

16161694 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8080849.

The product of its digits is 7776, while the sum is 34.

The square root of 16161694 is about 4020.1609420519. The cubic root of 16161694 is about 252.8302068101.

The spelling of 16161694 in words is "sixteen million, one hundred sixty-one thousand, six hundred ninety-four".