1157544343 has 4 divisors (see below), whose sum is σ = 1159846128. Its totient is φ = 1155242560.

The previous prime is 1157544319. The next prime is 1157544379. The reversal of 1157544343 is 3434457511.

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 1157544343 - 2²¹ = 1155447191 is a prime.

It is a super-2 number, since 2×1157544343² = 2679817812022603298, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1157544313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1150138 + ... + 1151143.

It is an arithmetic number, because the mean of its divisors is an integer number (289961532).

Almost surely, 2^1157544343 is an apocalyptic number.

1157544343 is a deficient number, since it is larger than the sum of its proper divisors (2301785).

1157544343 is an equidigital number, since it uses as much as digits as its factorization.

1157544343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2301784.

The product of its digits is 100800, while the sum is 37.

The square root of 1157544343 is about 34022.7033464421. The cubic root of 1157544343 is about 1049.9756133414.

The spelling of 1157544343 in words is "one billion, one hundred fifty-seven million, five hundred forty-four thousand, three hundred forty-three".