1019469857345 has 4 divisors (see below), whose sum is σ = 1223363828820. Its totient is φ = 815575885872.

The previous prime is 1019469857333. The next prime is 1019469857353. The reversal of 1019469857345 is 5437589649101.

It is a happy number.

It is a Cunningham number, because it is equal to 1009688²+1.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 367008179344 + 652461678001 = 605812^2 + 807751^2 .

It is a cyclic number.

It is not a de Polignac number, because 1019469857345 - 2⁸ = 1019469857089 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 101946985730 + ... + 101946985739.

It is an arithmetic number, because the mean of its divisors is an integer number (305840957205).

Almost surely, 2^{1019469857345} is an apocalyptic number.

It is an amenable number.

1019469857345 is a deficient number, since it is larger than the sum of its proper divisors (203893971475).

1019469857345 is an equidigital number, since it uses as much as digits as its factorization.

1019469857345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203893971474.

The product of its (nonzero) digits is 32659200, while the sum is 62.

The spelling of 1019469857345 in words is "one trillion, nineteen billion, four hundred sixty-nine million, eight hundred fifty-seven thousand, three hundred forty-five".