1063742638 has 8 divisors (see below), whose sum is σ = 1823558832. Its totient is φ = 455889696.

The previous prime is 1063742623. The next prime is 1063742639. The reversal of 1063742638 is 8362473601.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1063742638² = 2263096799798398088, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1063742638.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1063742639) 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, 37990795 + ... + 37990822.

It is an arithmetic number, because the mean of its divisors is an integer number (227944854).

Almost surely, 2^1063742638 is an apocalyptic number.

1063742638 is a deficient number, since it is larger than the sum of its proper divisors (759816194).

1063742638 is an equidigital number, since it uses as much as digits as its factorization.

1063742638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75981626.

The product of its (nonzero) digits is 145152, while the sum is 40.

The square root of 1063742638 is about 32615.0676528503. The cubic root of 1063742638 is about 1020.8114259659.

The spelling of 1063742638 in words is "one billion, sixty-three million, seven hundred forty-two thousand, six hundred thirty-eight".