1516145645 has 32 divisors (see below), whose sum is σ = 2110364928. Its totient is φ = 1024178688.

The previous prime is 1516145639. The next prime is 1516145647. The reversal of 1516145645 is 5465416151.

It is a cyclic number.

It is not a de Polignac number, because 1516145645 - 2²² = 1511951341 is a prime.

It is a super-3 number, since 3×1516145645³ (a number of 29 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1516145599 and 1516145608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1516145647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1617617 + ... + 1618553.

It is an arithmetic number, because the mean of its divisors is an integer number (65948904).

Almost surely, 2^1516145645 is an apocalyptic number.

It is an amenable number.

1516145645 is a deficient number, since it is larger than the sum of its proper divisors (594219283).

1516145645 is an equidigital number, since it uses as much as digits as its factorization.

1516145645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1589.

The product of its digits is 72000, while the sum is 38.

The square root of 1516145645 is about 38937.7149432270. The cubic root of 1516145645 is about 1148.8067383329.

It can be divided in two parts, 15161 and 45645, that added together give a palindrome (60806).

The spelling of 1516145645 in words is "one billion, five hundred sixteen million, one hundred forty-five thousand, six hundred forty-five".