16331949 has 10 divisors (see below), whose sum is σ = 24397230. Its totient is φ = 10887912.

The previous prime is 16331929. The next prime is 16331971. The reversal of 16331949 is 94913361.

16331949 is a `hidden beast` number, since 1 + 633 + 19 + 4 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 11269449 + 5062500 = 3357^2 + 2250^2 .

It is a de Polignac number, because none of the positive numbers 2^k-16331949 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16331929) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 100734 + ... + 100895.

It is an arithmetic number, because the mean of its divisors is an integer number (2439723).

Almost surely, 2^16331949 is an apocalyptic number.

It is an amenable number.

16331949 is a deficient number, since it is larger than the sum of its proper divisors (8065281).

16331949 is an equidigital number, since it uses as much as digits as its factorization.

16331949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201641 (or 201632 counting only the distinct ones).

The product of its digits is 17496, while the sum is 36.

The square root of 16331949 is about 4041.2806138649. The cubic root of 16331949 is about 253.7149187510.

The spelling of 16331949 in words is "sixteen million, three hundred thirty-one thousand, nine hundred forty-nine".