16349481 has 24 divisors (see below), whose sum is σ = 25945920. Its totient is φ = 9874656.

The previous prime is 16349479. The next prime is 16349491. The reversal of 16349481 is 18494361.

16349481 is a `hidden beast` number, since 163 + 494 + 8 + 1 = 666.

It is not a de Polignac number, because 16349481 - 2¹ = 16349479 is a prime.

It is a super-2 number, since 2×16349481² = 534611057938722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16349401) 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, 1855 + ... + 6011.

It is an arithmetic number, because the mean of its divisors is an integer number (1081080).

Almost surely, 2^16349481 is an apocalyptic number.

It is an amenable number.

16349481 is a deficient number, since it is larger than the sum of its proper divisors (9596439).

16349481 is a wasteful number, since it uses less digits than its factorization.

16349481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4205 (or 4202 counting only the distinct ones).

The product of its digits is 20736, while the sum is 36.

The square root of 16349481 is about 4043.4491464590. The cubic root of 16349481 is about 253.8056721417.

The spelling of 16349481 in words is "sixteen million, three hundred forty-nine thousand, four hundred eighty-one".