1026992887394 has 4 divisors (see below), whose sum is σ = 1540489331094. Its totient is φ = 513496443696.

The previous prime is 1026992887373. The next prime is 1026992887469. The reversal of 1026992887394 is 4937882996201.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1026989694025 + 3193369 = 1013405^2 + 1787^2 .

It is a super-2 number, since 2×1026992887394² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256748221847 + ... + 256748221850.

Almost surely, 2^{1026992887394} is an apocalyptic number.

1026992887394 is a deficient number, since it is larger than the sum of its proper divisors (513496443700).

1026992887394 is an equidigital number, since it uses as much as digits as its factorization.

1026992887394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 513496443699.

The product of its (nonzero) digits is 94058496, while the sum is 68.

The spelling of 1026992887394 in words is "one trillion, twenty-six billion, nine hundred ninety-two million, eight hundred eighty-seven thousand, three hundred ninety-four".