1081554330 has 16 divisors (see below), whose sum is σ = 2595730464. Its totient is φ = 288414480.

The previous prime is 1081554259. The next prime is 1081554367. The reversal of 1081554330 is 334551801.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 36051811 = 1081554330 / (1 + 0 + 8 + 1 + 5 + 5 + 4 + 3 + 3 + 0).

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, 18025876 + ... + 18025935.

It is an arithmetic number, because the mean of its divisors is an integer number (162233154).

Almost surely, 2^1081554330 is an apocalyptic number.

1081554330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1081554330 is an abundant number, since it is smaller than the sum of its proper divisors (1514176134).

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

1081554330 is a wasteful number, since it uses less digits than its factorization.

1081554330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36051821.

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 1081554330 is about 32886.9933256295. The cubic root of 1081554330 is about 1026.4775296485.

The spelling of 1081554330 in words is "one billion, eighty-one million, five hundred fifty-four thousand, three hundred thirty".