1019944891740 has 24 divisors (see below), whose sum is σ = 2855845697040. Its totient is φ = 271985304448.

The previous prime is 1019944891709. The next prime is 1019944891747. The reversal of 1019944891740 is 471984499101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1019944891747) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8499540705 + ... + 8499540824.

It is an arithmetic number, because the mean of its divisors is an integer number (118993570710).

Almost surely, 2^{1019944891740} is an apocalyptic number.

1019944891740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1019944891740 is an abundant number, since it is smaller than the sum of its proper divisors (1835900805300).

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

1019944891740 is a wasteful number, since it uses less digits than its factorization.

1019944891740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16999081541 (or 16999081539 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 57.

The spelling of 1019944891740 in words is "one trillion, nineteen billion, nine hundred forty-four million, eight hundred ninety-one thousand, seven hundred forty".