1157812563 has 8 divisors (see below), whose sum is σ = 1543922128. Its totient is φ = 771789024.

The previous prime is 1157812561. The next prime is 1157812603. The reversal of 1157812563 is 3652187511.

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

It is not a de Polignac number, because 1157812563 - 2¹ = 1157812561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1157812561) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23145 + ... + 53397.

It is an arithmetic number, because the mean of its divisors is an integer number (192990266).

Almost surely, 2^1157812563 is an apocalyptic number.

1157812563 is a deficient number, since it is larger than the sum of its proper divisors (386109565).

1157812563 is a wasteful number, since it uses less digits than its factorization.

1157812563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43013.

The product of its digits is 50400, while the sum is 39.

The square root of 1157812563 is about 34026.6448977856. The cubic root of 1157812563 is about 1050.0567053276.

It can be divided in two parts, 1157812 and 563, that multiplied together give a palindrome (651848156).

The spelling of 1157812563 in words is "one billion, one hundred fifty-seven million, eight hundred twelve thousand, five hundred sixty-three".