7485191091 has 12 divisors (see below), whose sum is σ = 12356506032. Its totient is φ = 4277252016.

The previous prime is 7485191081. The next prime is 7485191123. The reversal of 7485191091 is 1901915847.

It is a happy number.

7485191091 is a `hidden beast` number, since 7 + 48 + 519 + 1 + 0 + 91 = 666.

It is not a de Polignac number, because 7485191091 - 2⁶ = 7485191027 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7485191081) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 59406216 + ... + 59406341.

It is an arithmetic number, because the mean of its divisors is an integer number (1029708836).

Almost surely, 2^7485191091 is an apocalyptic number.

7485191091 is a deficient number, since it is larger than the sum of its proper divisors (4871314941).

7485191091 is a wasteful number, since it uses less digits than its factorization.

7485191091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118812570 (or 118812567 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 45.

The square root of 7485191091 is about 86516.9988557162. The cubic root of 7485191091 is about 1956.1446401816.

The spelling of 7485191091 in words is "seven billion, four hundred eighty-five million, one hundred ninety-one thousand, ninety-one".