5185142691 has 4 divisors (see below), whose sum is σ = 6913523592. Its totient is φ = 3456761792.

The previous prime is 5185142671. The next prime is 5185142713. The reversal of 5185142691 is 1962415815.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 5185142691 - 2¹⁴ = 5185126307 is a prime.

It is not an unprimeable number, because it can be changed into a prime (5185142621) 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, 864190446 + ... + 864190451.

It is an arithmetic number, because the mean of its divisors is an integer number (1728380898).

Almost surely, 2^5185142691 is an apocalyptic number.

5185142691 is a deficient number, since it is larger than the sum of its proper divisors (1728380901).

5185142691 is a wasteful number, since it uses less digits than its factorization.

5185142691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1728380900.

The product of its digits is 86400, while the sum is 42.

The square root of 5185142691 is about 72007.9349169243. The cubic root of 5185142691 is about 1730.8266390392.

The spelling of 5185142691 in words is "five billion, one hundred eighty-five million, one hundred forty-two thousand, six hundred ninety-one".