1156261030 has 16 divisors (see below), whose sum is σ = 2153038320. Its totient is φ = 446555872.

The previous prime is 1156260997. The next prime is 1156261079. The reversal of 1156261030 is 301626511.

It is a junction number, because it is equal to n+sod(n) for n = 1156260986 and 1156261004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1993264 + ... + 1993843.

It is an arithmetic number, because the mean of its divisors is an integer number (134564895).

Almost surely, 2^1156261030 is an apocalyptic number.

1156261030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1156261030 is a deficient number, since it is larger than the sum of its proper divisors (996777290).

1156261030 is a wasteful number, since it uses less digits than its factorization.

1156261030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3987143.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 1156261030 is about 34003.8384597974. The cubic root of 1156261030 is about 1049.5874509299.

Adding to 1156261030 its reverse (301626511), we get a palindrome (1457887541).

The spelling of 1156261030 in words is "one billion, one hundred fifty-six million, two hundred sixty-one thousand, thirty".