1103551144 has 32 divisors (see below), whose sum is σ = 2139920640. Its totient is φ = 532972800.

The previous prime is 1103551087. The next prime is 1103551157. The reversal of 1103551144 is 4411553011.

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, 137712 + ... + 145504.

It is an arithmetic number, because the mean of its divisors is an integer number (66872520).

Almost surely, 2^1103551144 is an apocalyptic number.

It is an amenable number.

1103551144 is a deficient number, since it is larger than the sum of its proper divisors (1036369496).

1103551144 is a wasteful number, since it uses less digits than its factorization.

1103551144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8401 (or 8397 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 25.

The square root of 1103551144 is about 33219.7402759263. The cubic root of 1103551144 is about 1033.3897632266.

The spelling of 1103551144 in words is "one billion, one hundred three million, five hundred fifty-one thousand, one hundred forty-four".