1646163126 has 48 divisors (see below), whose sum is σ = 3618529200. Its totient is φ = 540800064.

The previous prime is 1646162981. The next prime is 1646163139. The reversal of 1646163126 is 6213616461.

It is a happy number.

1646163126 is a `hidden beast` number, since 1 + 6 + 4 + 616 + 31 + 2 + 6 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 384385 + ... + 388643.

It is an arithmetic number, because the mean of its divisors is an integer number (75386025).

Almost surely, 2^1646163126 is an apocalyptic number.

1646163126 is an abundant number, since it is smaller than the sum of its proper divisors (1972366074).

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

1646163126 is a wasteful number, since it uses less digits than its factorization.

1646163126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4573 (or 4570 counting only the distinct ones).

The product of its digits is 31104, while the sum is 36.

The square root of 1646163126 is about 40572.9358809539. The cubic root of 1646163126 is about 1180.7490996619.

Adding to 1646163126 its reverse (6213616461), we get a palindrome (7859779587).

The spelling of 1646163126 in words is "one billion, six hundred forty-six million, one hundred sixty-three thousand, one hundred twenty-six".