4154238809 has 4 divisors (see below), whose sum is σ = 4747701504. Its totient is φ = 3560776116.

The previous prime is 4154238763. The next prime is 4154238839. The reversal of 4154238809 is 9088324514.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4154238809 - 2²⁸ = 3885803353 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4154238809.

It is not an unprimeable number, because it can be changed into a prime (4154238839) 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, 296731337 + ... + 296731350.

It is an arithmetic number, because the mean of its divisors is an integer number (1186925376).

Almost surely, 2^4154238809 is an apocalyptic number.

It is an amenable number.

4154238809 is a deficient number, since it is larger than the sum of its proper divisors (593462695).

4154238809 is an equidigital number, since it uses as much as digits as its factorization.

4154238809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 593462694.

The product of its (nonzero) digits is 276480, while the sum is 44.

The square root of 4154238809 is about 64453.3847753553. The cubic root of 4154238809 is about 1607.5475191198.

The spelling of 4154238809 in words is "four billion, one hundred fifty-four million, two hundred thirty-eight thousand, eight hundred nine".