2155744029 has 8 divisors (see below), whose sum is σ = 2973440160. Its totient is φ = 1387605296.

The previous prime is 2155743929. The next prime is 2155744037. The reversal of 2155744029 is 9204475512.

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

It is a cyclic number.

It is not a de Polignac number, because 2155744029 - 2⁷ = 2155743901 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2155744079) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12389247 + ... + 12389420.

It is an arithmetic number, because the mean of its divisors is an integer number (371680020).

Almost surely, 2^2155744029 is an apocalyptic number.

2155744029 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

2155744029 is a deficient number, since it is larger than the sum of its proper divisors (817696131).

2155744029 is a wasteful number, since it uses less digits than its factorization.

2155744029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24778699.

The product of its (nonzero) digits is 100800, while the sum is 39.

The square root of 2155744029 is about 46429.9906202877. The cubic root of 2155744029 is about 1291.8112547257.

The spelling of 2155744029 in words is "two billion, one hundred fifty-five million, seven hundred forty-four thousand, twenty-nine".