1042648619 has 4 divisors (see below), whose sum is σ = 1042858200. Its totient is φ = 1042439040.

The previous prime is 1042648613. The next prime is 1042648631. The reversal of 1042648619 is 9168462401.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9168462401 = 7 ⋅1309780343.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1042648619 is a prime.

It is a super-2 number, since 2×1042648619² = 2174232285405214322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1042648613) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 97142 + ... + 107339.

It is an arithmetic number, because the mean of its divisors is an integer number (260714550).

Almost surely, 2^1042648619 is an apocalyptic number.

1042648619 is a deficient number, since it is larger than the sum of its proper divisors (209581).

1042648619 is an equidigital number, since it uses as much as digits as its factorization.

1042648619 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209580.

The product of its (nonzero) digits is 82944, while the sum is 41.

The square root of 1042648619 is about 32290.0699751487. The cubic root of 1042648619 is about 1014.0187622882.

The spelling of 1042648619 in words is "one billion, forty-two million, six hundred forty-eight thousand, six hundred nineteen".