6454078157 has 4 divisors (see below), whose sum is σ = 6470929920. Its totient is φ = 6437226396.

The previous prime is 6454078153. The next prime is 6454078171. The reversal of 6454078157 is 7518704546.

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 6454078157 - 2² = 6454078153 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6454078153) 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, 8425307 + ... + 8426072.

It is an arithmetic number, because the mean of its divisors is an integer number (1617732480).

Almost surely, 2^6454078157 is an apocalyptic number.

It is an amenable number.

6454078157 is a deficient number, since it is larger than the sum of its proper divisors (16851763).

6454078157 is a wasteful number, since it uses less digits than its factorization.

6454078157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16851762.

The product of its (nonzero) digits is 940800, while the sum is 47.

The square root of 6454078157 is about 80337.2775055267. The cubic root of 6454078157 is about 1861.8502185805.

The spelling of 6454078157 in words is "six billion, four hundred fifty-four million, seventy-eight thousand, one hundred fifty-seven".