1157408345 has 4 divisors (see below), whose sum is σ = 1388890020. Its totient is φ = 925926672.

The previous prime is 1157408341. The next prime is 1157408347. The reversal of 1157408345 is 5438047511.

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

It can be written as a sum of positive squares in 2 ways, for example, as 440454169 + 716954176 = 20987^2 + 26776^2 .

It is a cyclic number.

It is not a de Polignac number, because 1157408345 - 2² = 1157408341 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1157408299 and 1157408308.

It is not an unprimeable number, because it can be changed into a prime (1157408341) 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, 115740830 + ... + 115740839.

It is an arithmetic number, because the mean of its divisors is an integer number (347222505).

Almost surely, 2^1157408345 is an apocalyptic number.

It is an amenable number.

1157408345 is a deficient number, since it is larger than the sum of its proper divisors (231481675).

1157408345 is an equidigital number, since it uses as much as digits as its factorization.

1157408345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231481674.

The product of its (nonzero) digits is 67200, while the sum is 38.

The square root of 1157408345 is about 34020.7046517264. The cubic root of 1157408345 is about 1049.9344917559.

The spelling of 1157408345 in words is "one billion, one hundred fifty-seven million, four hundred eight thousand, three hundred forty-five".