1181649016590 has 128 divisors (see below), whose sum is σ = 3294317233152. Its totient is φ = 265675852800.

The previous prime is 1181649016579. The next prime is 1181649016651. The reversal of 1181649016590 is 956109461811.

It is a super-2 number, since 2×1181649016590² (a number of 25 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5614765 + ... + 5821415.

It is an arithmetic number, because the mean of its divisors is an integer number (25736853384).

Almost surely, 2^{1181649016590} is an apocalyptic number.

1181649016590 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 1181649016590, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1647158616576).

1181649016590 is an abundant number, since it is smaller than the sum of its proper divisors (2112668216562).

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

1181649016590 is a wasteful number, since it uses less digits than its factorization.

1181649016590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207114.

The product of its (nonzero) digits is 466560, while the sum is 51.

The spelling of 1181649016590 in words is "one trillion, one hundred eighty-one billion, six hundred forty-nine million, sixteen thousand, five hundred ninety".