1228696142738 has 8 divisors (see below), whose sum is σ = 1843055251788. Its totient is φ = 614344392144.

The previous prime is 1228696142711. The next prime is 1228696142759. The reversal of 1228696142738 is 8372416968221.

It can be written as a sum of positive squares in 2 ways, for example, as 840234389449 + 388461753289 = 916643^2 + 623267^2 .

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

It is a super-2 number, since 2×1228696142738² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1401281 + ... + 2102612.

Almost surely, 2^{1228696142738} is an apocalyptic number.

1228696142738 is a deficient number, since it is larger than the sum of its proper divisors (614359109050).

1228696142738 is a wasteful number, since it uses less digits than its factorization.

1228696142738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3679228.

The product of its digits is 13934592, while the sum is 59.

The spelling of 1228696142738 in words is "one trillion, two hundred twenty-eight billion, six hundred ninety-six million, one hundred forty-two thousand, seven hundred thirty-eight".