1153631730 has 64 divisors (see below), whose sum is σ = 2948192640. Its totient is φ = 287898624.

The previous prime is 1153631711. The next prime is 1153631741. The reversal of 1153631730 is 371363511.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 84972 + ... + 97608.

It is an arithmetic number, because the mean of its divisors is an integer number (46065510).

Almost surely, 2^1153631730 is an apocalyptic number.

1153631730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1153631730, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1474096320).

1153631730 is an abundant number, since it is smaller than the sum of its proper divisors (1794560910).

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

1153631730 is a wasteful number, since it uses less digits than its factorization.

1153631730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12843.

The product of its (nonzero) digits is 5670, while the sum is 30.

The square root of 1153631730 is about 33965.1546441349. The cubic root of 1153631730 is about 1048.7912712128.

The spelling of 1153631730 in words is "one billion, one hundred fifty-three million, six hundred thirty-one thousand, seven hundred thirty".