1642846149 has 24 divisors (see below), whose sum is σ = 2723278272. Its totient is φ = 934865280.

The previous prime is 1642846133. The next prime is 1642846151. The reversal of 1642846149 is 9416482461.

1642846149 is a `hidden beast` number, since 1 + 6 + 4 + 28 + 4 + 614 + 9 = 666.

It is not a de Polignac number, because 1642846149 - 2⁴ = 1642846133 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1642847149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 38919 + ... + 69284.

It is an arithmetic number, because the mean of its divisors is an integer number (113469928).

Almost surely, 2^1642846149 is an apocalyptic number.

It is an amenable number.

1642846149 is a deficient number, since it is larger than the sum of its proper divisors (1080432123).

1642846149 is a wasteful number, since it uses less digits than its factorization.

1642846149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108457 (or 108454 counting only the distinct ones).

The product of its digits is 331776, while the sum is 45.

The square root of 1642846149 is about 40532.0385497695. The cubic root of 1642846149 is about 1179.9555065575.

The spelling of 1642846149 in words is "one billion, six hundred forty-two million, eight hundred forty-six thousand, one hundred forty-nine".