1156540630 has 48 divisors (see below), whose sum is σ = 2428952400. Its totient is φ = 395333568.

The previous prime is 1156540601. The next prime is 1156540639. The reversal of 1156540630 is 360456511.

It is a junction number, because it is equal to n+sod(n) for n = 1156540592 and 1156540601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1156540639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 167629 + ... + 174391.

It is an arithmetic number, because the mean of its divisors is an integer number (50603175).

Almost surely, 2^1156540630 is an apocalyptic number.

1156540630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1156540630 is an abundant number, since it is smaller than the sum of its proper divisors (1272411770).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1156540630 is a wasteful number, since it uses less digits than its factorization.

1156540630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7133 (or 7126 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 1156540630 is about 34007.9495118421. The cubic root of 1156540630 is about 1049.6720457264.

The spelling of 1156540630 in words is "one billion, one hundred fifty-six million, five hundred forty thousand, six hundred thirty".