2756243642 has 16 divisors (see below), whose sum is σ = 4204933992. Its totient is φ = 1354629120.

The previous prime is 2756243639. The next prime is 2756243657. The reversal of 2756243642 is 2463426572.

It can be written as a sum of positive squares in 4 ways, for example, as 2181730681 + 574512961 = 46709^2 + 23969^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2756243642.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 200378 + ... + 213690.

Almost surely, 2^2756243642 is an apocalyptic number.

2756243642 is a deficient number, since it is larger than the sum of its proper divisors (1448690350).

2756243642 is a wasteful number, since it uses less digits than its factorization.

2756243642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15073.

The product of its digits is 483840, while the sum is 41.

The square root of 2756243642 is about 52499.9394475841. The cubic root of 2756243642 is about 1402.0791627140.

The spelling of 2756243642 in words is "two billion, seven hundred fifty-six million, two hundred forty-three thousand, six hundred forty-two".