1304545157 has 4 divisors (see below), whose sum is σ = 1304617536. Its totient is φ = 1304472780.

The previous prime is 1304545153. The next prime is 1304545237. The reversal of 1304545157 is 7515454031.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1304545157 - 2² = 1304545153 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 (1304545153) 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, 14708 + ... + 53154.

It is an arithmetic number, because the mean of its divisors is an integer number (326154384).

Almost surely, 2^1304545157 is an apocalyptic number.

It is an amenable number.

1304545157 is a deficient number, since it is larger than the sum of its proper divisors (72379).

1304545157 is an equidigital number, since it uses as much as digits as its factorization.

1304545157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72378.

The product of its (nonzero) digits is 42000, while the sum is 35.

The square root of 1304545157 is about 36118.4877451977. The cubic root of 1304545157 is about 1092.6633399982.

Adding to 1304545157 its reverse (7515454031), we get a palindrome (8819999188).

The spelling of 1304545157 in words is "one billion, three hundred four million, five hundred forty-five thousand, one hundred fifty-seven".