1101640023 has 36 divisors (see below), whose sum is σ = 1809433080. Its totient is φ = 644619360.

The previous prime is 1101639989. The next prime is 1101640031. The reversal of 1101640023 is 3200461011.

It is a happy number.

1101640023 is a `hidden beast` number, since 1 + 1 + 0 + 1 + 640 + 0 + 23 = 666.

It is not a de Polignac number, because 1101640023 - 2²⁰ = 1100591447 is a prime.

It is a super-2 number, since 2×1101640023² = 2427221480550881058, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1101639978 and 1101640005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1101640093) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 14140 + ... + 49022.

It is an arithmetic number, because the mean of its divisors is an integer number (50262030).

Almost surely, 2^1101640023 is an apocalyptic number.

1101640023 is a deficient number, since it is larger than the sum of its proper divisors (707793057).

1101640023 is a wasteful number, since it uses less digits than its factorization.

1101640023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34940 (or 34926 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 1101640023 is about 33190.9629718693. The cubic root of 1101640023 is about 1032.7928798396.

The spelling of 1101640023 in words is "one billion, one hundred one million, six hundred forty thousand, twenty-three".