1036991818634 has 4 divisors (see below), whose sum is σ = 1555487727954. Its totient is φ = 518495909316.

The previous prime is 1036991818591. The next prime is 1036991818651. The reversal of 1036991818634 is 4368181996301.

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., 1024137928009 + 12853890625 = 1011997^2 + 113375^2 .

It is a super-3 number, since 3×1036991818634³ (a number of 37 digits) contains 333 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 259247954657 + ... + 259247954660.

Almost surely, 2^{1036991818634} is an apocalyptic number.

1036991818634 is a deficient number, since it is larger than the sum of its proper divisors (518495909320).

1036991818634 is an equidigital number, since it uses as much as digits as its factorization.

1036991818634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 518495909319.

The product of its (nonzero) digits is 6718464, while the sum is 59.

The spelling of 1036991818634 in words is "one trillion, thirty-six billion, nine hundred ninety-one million, eight hundred eighteen thousand, six hundred thirty-four".