1144542630 has 192 divisors, whose sum is σ = 3564417024. Its totient is φ = 229996800.

The previous prime is 1144542613. The next prime is 1144542631. The reversal of 1144542630 is 362454411.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1144542631) by changing a digit.

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 95 ways as a sum of consecutive naturals, for example, 786984 + ... + 788436.

It is an arithmetic number, because the mean of its divisors is an integer number (18564672).

Almost surely, 2^1144542630 is an apocalyptic number.

1144542630 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 1144542630, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1782208512).

1144542630 is an abundant number, since it is smaller than the sum of its proper divisors (2419874394).

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

1144542630 is a wasteful number, since it uses less digits than its factorization.

1144542630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1523 (or 1512 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 1144542630 is about 33831.0896957222. The cubic root of 1144542630 is about 1046.0296407459.

It can be divided in two parts, 11 and 44542630, that added together give a triangular number (44542641 = T₉₄₃₈).

The spelling of 1144542630 in words is "one billion, one hundred forty-four million, five hundred forty-two thousand, six hundred thirty".