1157771043 has 128 divisors (see below), whose sum is σ = 2206310400. Its totient is φ = 588902400.

The previous prime is 1157771039. The next prime is 1157771053. The reversal of 1157771043 is 3401777511.

1157771043 is a `hidden beast` number, since 11 + 577 + 71 + 0 + 4 + 3 = 666.

It is not a de Polignac number, because 1157771043 - 2² = 1157771039 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1157770989 and 1157771007.

It is not an unprimeable number, because it can be changed into a prime (1157771003) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 2034463 + ... + 2035031.

It is an arithmetic number, because the mean of its divisors is an integer number (17236800).

Almost surely, 2^1157771043 is an apocalyptic number.

1157771043 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1157771043 is a deficient number, since it is larger than the sum of its proper divisors (1048539357).

1157771043 is a wasteful number, since it uses less digits than its factorization.

1157771043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 650 (or 644 counting only the distinct ones).

The product of its (nonzero) digits is 20580, while the sum is 36.

The square root of 1157771043 is about 34026.0347822076. The cubic root of 1157771043 is about 1050.0441532453.

The spelling of 1157771043 in words is "one billion, one hundred fifty-seven million, seven hundred seventy-one thousand, forty-three".