1156689345 has 24 divisors (see below), whose sum is σ = 2152859904. Its totient is φ = 528771936.

The previous prime is 1156689319. The next prime is 1156689349. The reversal of 1156689345 is 5439866511.

It is not a de Polignac number, because 1156689345 - 2⁷ = 1156689217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1156689294 and 1156689303.

It is not an unprimeable number, because it can be changed into a prime (1156689349) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 786129 + ... + 787598.

It is an arithmetic number, because the mean of its divisors is an integer number (89702496).

Almost surely, 2^1156689345 is an apocalyptic number.

1156689345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1156689345 is a deficient number, since it is larger than the sum of its proper divisors (996170559).

1156689345 is a wasteful number, since it uses less digits than its factorization.

1156689345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1573749 (or 1573742 counting only the distinct ones).

The product of its digits is 777600, while the sum is 48.

The square root of 1156689345 is about 34010.1359156355. The cubic root of 1156689345 is about 1049.7170348615.

The spelling of 1156689345 in words is "one billion, one hundred fifty-six million, six hundred eighty-nine thousand, three hundred forty-five".