1129251486390 has 64 divisors (see below), whose sum is σ = 2772341130240. Its totient is φ = 294250268160.

The previous prime is 1129251486373. The next prime is 1129251486413. The reversal of 1129251486390 is 936841529211.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 225870 + ... + 1519710.

It is an arithmetic number, because the mean of its divisors is an integer number (43317830160).

Almost surely, 2^{1129251486390} is an apocalyptic number.

1129251486390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1129251486390, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1386170565120).

1129251486390 is an abundant number, since it is smaller than the sum of its proper divisors (1643089643850).

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

1129251486390 is a wasteful number, since it uses less digits than its factorization.

1129251486390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1294517.

The product of its (nonzero) digits is 933120, while the sum is 51.

The spelling of 1129251486390 in words is "one trillion, one hundred twenty-nine billion, two hundred fifty-one million, four hundred eighty-six thousand, three hundred ninety".