1101993045 has 32 divisors (see below), whose sum is σ = 1776660480. Its totient is φ = 583260480.

The previous prime is 1101993031. The next prime is 1101993047. The reversal of 1101993045 is 5403991011.

It is not a de Polignac number, because 1101993045 - 2⁴ = 1101993029 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1101992997 and 1101993015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1101993047) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1702912 + ... + 1703558.

It is an arithmetic number, because the mean of its divisors is an integer number (55520640).

Almost surely, 2^1101993045 is an apocalyptic number.

1101993045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1101993045 is a deficient number, since it is larger than the sum of its proper divisors (674667435).

1101993045 is a wasteful number, since it uses less digits than its factorization.

1101993045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1345.

The product of its (nonzero) digits is 4860, while the sum is 33.

The square root of 1101993045 is about 33196.2805898492. The cubic root of 1101993045 is about 1032.9031880050.

The spelling of 1101993045 in words is "one billion, one hundred one million, nine hundred ninety-three thousand, forty-five".