1406438163 has 48 divisors (see below), whose sum is σ = 2269146880. Its totient is φ = 833587200.

The previous prime is 1406438161. The next prime is 1406438167. The reversal of 1406438163 is 3618346041.

It is a happy number.

1406438163 is a `hidden beast` number, since 1 + 4 + 0 + 643 + 8 + 1 + 6 + 3 = 666.

It is not a de Polignac number, because 1406438163 - 2¹ = 1406438161 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1406438161) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 873303 + ... + 874911.

Almost surely, 2^1406438163 is an apocalyptic number.

1406438163 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1406438163 is a deficient number, since it is larger than the sum of its proper divisors (862708717).

1406438163 is a wasteful number, since it uses less digits than its factorization.

1406438163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1900 (or 1897 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 1406438163 is about 37502.5087560819. The cubic root of 1406438163 is about 1120.4011538662.

It can be divided in two parts, 1406 and 438163, that added together give a square (439569 = 663²).

The spelling of 1406438163 in words is "one billion, four hundred six million, four hundred thirty-eight thousand, one hundred sixty-three".