7974785090 has 32 divisors (see below), whose sum is σ = 14498113536. Its totient is φ = 3158184960.

The previous prime is 7974785069. The next prime is 7974785099. The reversal of 7974785090 is 905874797.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (7974785099) 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, 397439 + ... + 417021.

It is an arithmetic number, because the mean of its divisors is an integer number (453066048).

Almost surely, 2^7974785090 is an apocalyptic number.

7974785090 is a deficient number, since it is larger than the sum of its proper divisors (6523328446).

7974785090 is a wasteful number, since it uses less digits than its factorization.

7974785090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19994.

The product of its (nonzero) digits is 4445280, while the sum is 56.

The square root of 7974785090 is about 89301.6522243570. The cubic root of 7974785090 is about 1997.8965460162.

The spelling of 7974785090 in words is "seven billion, nine hundred seventy-four million, seven hundred eighty-five thousand, ninety".