7890454066 has 16 divisors (see below), whose sum is σ = 13123320768. Its totient is φ = 3527773200.

The previous prime is 7890454063. The next prime is 7890454073. The reversal of 7890454066 is 6604540987.

It is not an unprimeable number, because it can be changed into a prime (7890454063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2938470 + ... + 2941153.

It is an arithmetic number, because the mean of its divisors is an integer number (820207548).

Almost surely, 2^7890454066 is an apocalyptic number.

7890454066 is a deficient number, since it is larger than the sum of its proper divisors (5232866702).

7890454066 is a wasteful number, since it uses less digits than its factorization.

7890454066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5879697.

The product of its (nonzero) digits is 1451520, while the sum is 49.

The square root of 7890454066 is about 88828.2278670469. The cubic root of 7890454066 is about 1990.8291845134.

The spelling of 7890454066 in words is "seven billion, eight hundred ninety million, four hundred fifty-four thousand, sixty-six".