1157472347 has 4 divisors (see below), whose sum is σ = 1157600136. Its totient is φ = 1157344560.

The previous prime is 1157472341. The next prime is 1157472359. The reversal of 1157472347 is 7432747511.

It is a happy number.

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 1157472347 - 2⁸ = 1157472091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1157472341) 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, 49178 + ... + 68799.

It is an arithmetic number, because the mean of its divisors is an integer number (289400034).

Almost surely, 2^1157472347 is an apocalyptic number.

1157472347 is a deficient number, since it is larger than the sum of its proper divisors (127789).

1157472347 is an equidigital number, since it uses as much as digits as its factorization.

1157472347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127788.

The product of its digits is 164640, while the sum is 41.

The square root of 1157472347 is about 34021.6452717972. The cubic root of 1157472347 is about 1049.9538443808.

The spelling of 1157472347 in words is "one billion, one hundred fifty-seven million, four hundred seventy-two thousand, three hundred forty-seven".