1151144554 has 48 divisors (see below), whose sum is σ = 2051179200. Its totient is φ = 482993280.

The previous prime is 1151144551. The next prime is 1151144557. The reversal of 1151144554 is 4554411511.

It is an interprime number because it is at equal distance from previous prime (1151144551) and next prime (1151144557).

It is not an unprimeable number, because it can be changed into a prime (1151144551) 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 23 ways as a sum of consecutive naturals, for example, 1306194 + ... + 1307074.

It is an arithmetic number, because the mean of its divisors is an integer number (42732900).

Almost surely, 2^1151144554 is an apocalyptic number.

1151144554 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1151144554 is a deficient number, since it is larger than the sum of its proper divisors (900034646).

1151144554 is a wasteful number, since it uses less digits than its factorization.

1151144554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1163 (or 1156 counting only the distinct ones).

The product of its digits is 8000, while the sum is 31.

The square root of 1151144554 is about 33928.5212468802. The cubic root of 1151144554 is about 1048.0370139453.

It can be divided in two parts, 11511 and 44554, that added together give a palindrome (56065).

The spelling of 1151144554 in words is "one billion, one hundred fifty-one million, one hundred forty-four thousand, five hundred fifty-four".