1019734649549 has 16 divisors (see below), whose sum is σ = 1271732952960. Its totient is φ = 794363760960.

The previous prime is 1019734649501. The next prime is 1019734649603. The reversal of 1019734649549 is 9459464379101.

It is not a de Polignac number, because 1019734649549 - 2⁸ = 1019734649293 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1019734649491 and 1019734649500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1019734639549) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1692914 + ... + 2214819.

It is an arithmetic number, because the mean of its divisors is an integer number (79483309560).

Almost surely, 2^{1019734649549} is an apocalyptic number.

It is an amenable number.

1019734649549 is a deficient number, since it is larger than the sum of its proper divisors (251998303411).

1019734649549 is a wasteful number, since it uses less digits than its factorization.

1019734649549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3911140.

The product of its (nonzero) digits is 29393280, while the sum is 62.

The spelling of 1019734649549 in words is "one trillion, nineteen billion, seven hundred thirty-four million, six hundred forty-nine thousand, five hundred forty-nine".