1157567993 has 8 divisors (see below), whose sum is σ = 1196616960. Its totient is φ = 1118625840.

The previous prime is 1157567987. The next prime is 1157568001. The reversal of 1157567993 is 3997657511.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1157567993 - 2¹⁴ = 1157551609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1157567923) 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 7 ways as a sum of consecutive naturals, for example, 4355 + ... + 48312.

It is an arithmetic number, because the mean of its divisors is an integer number (149577120).

Almost surely, 2^1157567993 is an apocalyptic number.

It is an amenable number.

1157567993 is a deficient number, since it is larger than the sum of its proper divisors (39048967).

1157567993 is an equidigital number, since it uses as much as digits as its factorization.

1157567993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53407.

The product of its digits is 1786050, while the sum is 53.

The square root of 1157567993 is about 34023.0509067015. The cubic root of 1157567993 is about 1049.9827640406.

The spelling of 1157567993 in words is "one billion, one hundred fifty-seven million, five hundred sixty-seven thousand, nine hundred ninety-three".