1103953645 has 8 divisors (see below), whose sum is σ = 1360548504. Its totient is φ = 859293504.

The previous prime is 1103953639. The next prime is 1103953651. The reversal of 1103953645 is 5463593011.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1103953639) and next prime (1103953651).

It can be written as a sum of positive squares in 4 ways, for example, as 681157801 + 422795844 = 26099^2 + 20562^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1103953645 is a prime.

It is a super-3 number, since 3×1103953645³ (a number of 28 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 2983474 + ... + 2983843.

It is an arithmetic number, because the mean of its divisors is an integer number (170068563).

Almost surely, 2^1103953645 is an apocalyptic number.

It is an amenable number.

1103953645 is a deficient number, since it is larger than the sum of its proper divisors (256594859).

1103953645 is an equidigital number, since it uses as much as digits as its factorization.

1103953645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5967359.

The product of its (nonzero) digits is 48600, while the sum is 37.

The square root of 1103953645 is about 33225.7978835723. The cubic root of 1103953645 is about 1033.5153849091.

The spelling of 1103953645 in words is "one billion, one hundred three million, nine hundred fifty-three thousand, six hundred forty-five".