1892681442 has 24 divisors (see below), whose sum is σ = 4200831180. Its totient is φ = 615505920.

The previous prime is 1892681423. The next prime is 1892681443. The reversal of 1892681442 is 2441862981.

1892681442 is a `hidden beast` number, since 189 + 26 + 8 + 1 + 442 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1485408681 + 407272761 = 38541^2 + 20181^2 .

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (1892681443) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1281567 + ... + 1283042.

Almost surely, 2^1892681442 is an apocalyptic number.

1892681442 is an abundant number, since it is smaller than the sum of its proper divisors (2308149738).

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

1892681442 is a wasteful number, since it uses less digits than its factorization.

1892681442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2564658 (or 2564655 counting only the distinct ones).

The product of its digits is 221184, while the sum is 45.

The square root of 1892681442 is about 43504.9588208057. The cubic root of 1892681442 is about 1236.9700219747.

The spelling of 1892681442 in words is "one billion, eight hundred ninety-two million, six hundred eighty-one thousand, four hundred forty-two".