1545544145 has 8 divisors (see below), whose sum is σ = 1854864360. Its totient is φ = 1236294400.

The previous prime is 1545544127. The next prime is 1545544163. The reversal of 1545544145 is 5414455451.

It is an interprime number because it is at equal distance from previous prime (1545544127) and next prime (1545544163).

It can be written as a sum of positive squares in 4 ways, for example, as 211760704 + 1333783441 = 14552^2 + 36521^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1545544145 - 2¹⁴ = 1545527761 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1545544099 and 1545544108.

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, 73295 + ... + 91995.

It is an arithmetic number, because the mean of its divisors is an integer number (231858045).

Almost surely, 2^1545544145 is an apocalyptic number.

It is an amenable number.

1545544145 is a deficient number, since it is larger than the sum of its proper divisors (309320215).

1545544145 is a wasteful number, since it uses less digits than its factorization.

1545544145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35235.

The product of its digits is 160000, while the sum is 38.

The square root of 1545544145 is about 39313.4092263696. The cubic root of 1545544145 is about 1156.1844872743.

Adding to 1545544145 its reverse (5414455451), we get a palindrome (6959999596).

The spelling of 1545544145 in words is "one billion, five hundred forty-five million, five hundred forty-four thousand, one hundred forty-five".