1049891609520 has 480 divisors, whose sum is σ = 3829813251264. Its totient is φ = 256219545600.

The previous prime is 1049891609491. The next prime is 1049891609561. The reversal of 1049891609520 is 259061989401.

1049891609520 is a `hidden beast` number, since 1 + 0 + 4 + 9 + 8 + 9 + 1 + 609 + 5 + 20 = 666.

It is a super-2 number, since 2×1049891609520² (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 95 ways as a sum of consecutive naturals, for example, 579729415 + ... + 579731225.

Almost surely, 2^{1049891609520} is an apocalyptic number.

1049891609520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1049891609520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1914906625632).

1049891609520 is an abundant number, since it is smaller than the sum of its proper divisors (2779921641744).

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

1049891609520 is a wasteful number, since it uses less digits than its factorization.

1049891609520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2341 (or 2332 counting only the distinct ones).

The product of its (nonzero) digits is 1399680, while the sum is 54.

The spelling of 1049891609520 in words is "one trillion, forty-nine billion, eight hundred ninety-one million, six hundred nine thousand, five hundred twenty".