2142917684 has 6 divisors (see below), whose sum is σ = 3750105954. Its totient is φ = 1071458840.

The previous prime is 2142917683. The next prime is 2142917723. The reversal of 2142917684 is 4867192412.

It can be written as a sum of positive squares in only one way, i.e., 1933536784 + 209380900 = 43972^2 + 14470^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2142917683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 267864707 + ... + 267864714.

It is an arithmetic number, because the mean of its divisors is an integer number (625017659).

Almost surely, 2^2142917684 is an apocalyptic number.

It is an amenable number.

2142917684 is a deficient number, since it is larger than the sum of its proper divisors (1607188270).

2142917684 is a wasteful number, since it uses less digits than its factorization.

2142917684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 535729425 (or 535729423 counting only the distinct ones).

The product of its digits is 193536, while the sum is 44.

The square root of 2142917684 is about 46291.6589030897. The cubic root of 2142917684 is about 1289.2441306315.

The spelling of 2142917684 in words is "two billion, one hundred forty-two million, nine hundred seventeen thousand, six hundred eighty-four".