7990001019 has 48 divisors (see below), whose sum is σ = 15495777024. Its totient is φ = 3831364800.

The previous prime is 7990001009. The next prime is 7990001069. The reversal of 7990001019 is 9101000997.

It is not a de Polignac number, because 7990001019 - 2⁸ = 7990000763 is a prime.

It is a super-2 number, since 2×7990001019² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7990001009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 434437 + ... + 452454.

It is an arithmetic number, because the mean of its divisors is an integer number (322828688).

Almost surely, 2^7990001019 is an apocalyptic number.

7990001019 is a deficient number, since it is larger than the sum of its proper divisors (7505776005).

7990001019 is a wasteful number, since it uses less digits than its factorization.

7990001019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 886928 (or 886925 counting only the distinct ones).

The product of its (nonzero) digits is 5103, while the sum is 36.

The square root of 7990001019 is about 89386.8056202928. The cubic root of 7990001019 is about 1999.1664041906.

The spelling of 7990001019 in words is "seven billion, nine hundred ninety million, one thousand, nineteen".