16161958 has 8 divisors (see below), whose sum is σ = 24262128. Its totient is φ = 8074584.

The previous prime is 16161953. The next prime is 16161991. The reversal of 16161958 is 85916161.

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

It is a super-2 number, since 2×16161958² = 522417772787528, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16161953) 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, 1135 + ... + 5797.

It is an arithmetic number, because the mean of its divisors is an integer number (3032766).

Almost surely, 2^16161958 is an apocalyptic number.

16161958 is a deficient number, since it is larger than the sum of its proper divisors (8100170).

16161958 is a wasteful number, since it uses less digits than its factorization.

16161958 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6398.

The product of its digits is 12960, while the sum is 37.

The square root of 16161958 is about 4020.1937764242. The cubic root of 16161958 is about 252.8315834565.

The spelling of 16161958 in words is "sixteen million, one hundred sixty-one thousand, nine hundred fifty-eight".