16149690 has 24 divisors (see below), whose sum is σ = 41989428. Its totient is φ = 4306560.

The previous prime is 16149631. The next prime is 16149691. The reversal of 16149690 is 9694161.

16149690 is a `hidden beast` number, since 161 + 496 + 9 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 13111641 + 3038049 = 3621^2 + 1743^2 .

It is a super-2 number, since 2×16149690² = 521624974192200, which contains 22 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (16149691) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 89631 + ... + 89810.

Almost surely, 2^16149690 is an apocalyptic number.

16149690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16149690 is an abundant number, since it is smaller than the sum of its proper divisors (25839738).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16149690 is a wasteful number, since it uses less digits than its factorization.

16149690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179454 (or 179451 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 36.

The square root of 16149690 is about 4018.6676896703. The cubic root of 16149690 is about 252.7675952729.

The spelling of 16149690 in words is "sixteen million, one hundred forty-nine thousand, six hundred ninety".