1642740676 has 12 divisors (see below), whose sum is σ = 2877166908. Its totient is φ = 820692992.

The previous prime is 1642740643. The next prime is 1642740677. The reversal of 1642740676 is 6760472461.

It can be written as a sum of positive squares in 2 ways, for example, as 799419076 + 843321600 = 28274^2 + 29040^2 .

It is not an unprimeable number, because it can be changed into a prime (1642740677) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 163861 + ... + 173596.

It is an arithmetic number, because the mean of its divisors is an integer number (239763909).

Almost surely, 2^1642740676 is an apocalyptic number.

It is an amenable number.

1642740676 is a deficient number, since it is larger than the sum of its proper divisors (1234426232).

1642740676 is a wasteful number, since it uses less digits than its factorization.

1642740676 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338678 (or 338676 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 43.

The square root of 1642740676 is about 40530.7374223564. The cubic root of 1642740676 is about 1179.9302544241.

The spelling of 1642740676 in words is "one billion, six hundred forty-two million, seven hundred forty thousand, six hundred seventy-six".