16161345 has 24 divisors (see below), whose sum is σ = 28357056. Its totient is φ = 8513568.

The previous prime is 16161337. The next prime is 16161347. The reversal of 16161345 is 54316161.

16161345 is a `hidden beast` number, since 1 + 6 + 1 + 613 + 45 = 666.

16161345 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 16161345 - 2³ = 16161337 is a prime.

It is a super-2 number, since 2×16161345² = 522378144418050, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (16161347) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1572 + ... + 5898.

It is an arithmetic number, because the mean of its divisors is an integer number (1181544).

Almost surely, 2^16161345 is an apocalyptic number.

16161345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16161345 is a deficient number, since it is larger than the sum of its proper divisors (12195711).

16161345 is a wasteful number, since it uses less digits than its factorization.

16161345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4421 (or 4418 counting only the distinct ones).

The product of its digits is 2160, while the sum is 27.

The square root of 16161345 is about 4020.1175355952. The cubic root of 16161345 is about 252.8283869024.

The spelling of 16161345 in words is "sixteen million, one hundred sixty-one thousand, three hundred forty-five".