1029390432356 has 48 divisors (see below), whose sum is σ = 2167987949568. Its totient is φ = 421377619200.

The previous prime is 1029390432353. The next prime is 1029390432373. The reversal of 1029390432356 is 6532340939201.

It is a super-2 number, since 2×1029390432356² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1029390432356.

It is not an unprimeable number, because it can be changed into a prime (1029390432353) by changing a digit.

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 in 15 ways as a sum of consecutive naturals, for example, 21923300 + ... + 21970203.

It is an arithmetic number, because the mean of its divisors is an integer number (45166415616).

Almost surely, 2^{1029390432356} is an apocalyptic number.

It is an amenable number.

1029390432356 is an abundant number, since it is smaller than the sum of its proper divisors (1138597517212).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1029390432356 is a wasteful number, since it uses less digits than its factorization.

1029390432356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43893572 (or 43893570 counting only the distinct ones).

The product of its (nonzero) digits is 1049760, while the sum is 47.

The spelling of 1029390432356 in words is "one trillion, twenty-nine billion, three hundred ninety million, four hundred thirty-two thousand, three hundred fifty-six".