1020144554 has 16 divisors (see below), whose sum is σ = 1797737760. Its totient is φ = 428032560.

The previous prime is 1020144529. The next prime is 1020144557. The reversal of 1020144554 is 4554410201.

It is a super-2 number, since 2×1020144554² = 2081389822111717832, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is not an unprimeable number, because it can be changed into a prime (1020144557) 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 7 ways as a sum of consecutive naturals, for example, 1783184 + ... + 1783755.

It is an arithmetic number, because the mean of its divisors is an integer number (112358610).

Almost surely, 2^1020144554 is an apocalyptic number.

1020144554 is a deficient number, since it is larger than the sum of its proper divisors (777593206).

1020144554 is a wasteful number, since it uses less digits than its factorization.

1020144554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3566965.

The product of its (nonzero) digits is 3200, while the sum is 26.

The square root of 1020144554 is about 31939.7018458219. The cubic root of 1020144554 is about 1006.6702600391.

Adding to 1020144554 its reverse (4554410201), we get a palindrome (5574554755).

The spelling of 1020144554 in words is "one billion, twenty million, one hundred forty-four thousand, five hundred fifty-four".