16149601 has 16 divisors (see below), whose sum is σ = 18471040. Its totient is φ = 13996800.

The previous prime is 16149583. The next prime is 16149619. The reversal of 16149601 is 10694161.

It is an interprime number because it is at equal distance from previous prime (16149583) and next prime (16149619).

It is a 4-Lehmer number, since φ(16149601) divides (16149601-1)⁴.

It is a cyclic number.

It is not a de Polignac number, because 16149601 - 2¹⁷ = 16018529 is a prime.

It is a super-2 number, since 2×16149601² = 521619224918402, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 16149601.

It is not an unprimeable number, because it can be changed into a prime (16149631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37081 + ... + 37513.

It is an arithmetic number, because the mean of its divisors is an integer number (1154440).

It is a Poulet number, since it divides 2^16149600-1.

Almost surely, 2^16149601 is an apocalyptic number.

It is an amenable number.

16149601 is a deficient number, since it is larger than the sum of its proper divisors (2321439).

16149601 is a wasteful number, since it uses less digits than its factorization.

16149601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 616.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 16149601 is about 4018.6566163334. The cubic root of 16149601 is about 252.7671309429.

The spelling of 16149601 in words is "sixteen million, one hundred forty-nine thousand, six hundred one".