7129453091 has 4 divisors (see below), whose sum is σ = 7143137784. Its totient is φ = 7115768400.

The previous prime is 7129453057. The next prime is 7129453117. The reversal of 7129453091 is 1903549217.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1903549217 = 439 ⋅4336103.

It is a cyclic number.

It is not a de Polignac number, because 7129453091 - 2¹⁸ = 7129190947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7129413091) 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, 6841565 + ... + 6842606.

It is an arithmetic number, because the mean of its divisors is an integer number (1785784446).

Almost surely, 2^7129453091 is an apocalyptic number.

7129453091 is a deficient number, since it is larger than the sum of its proper divisors (13684693).

7129453091 is a wasteful number, since it uses less digits than its factorization.

7129453091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13684692.

The product of its (nonzero) digits is 68040, while the sum is 41.

The square root of 7129453091 is about 84436.0887950170. The cubic root of 7129453091 is about 1924.6513646246.

The spelling of 7129453091 in words is "seven billion, one hundred twenty-nine million, four hundred fifty-three thousand, ninety-one".