2155036738 has 8 divisors (see below), whose sum is σ = 3234062988. Its totient is φ = 1077015744.

The previous prime is 2155036733. The next prime is 2155036757. The reversal of 2155036738 is 8376305512.

It can be written as a sum of positive squares in 2 ways, for example, as 2143967809 + 11068929 = 46303^2 + 3327^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 2155036738.

It is not an unprimeable number, because it can be changed into a prime (2155036733) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 245931 + ... + 254542.

Almost surely, 2^2155036738 is an apocalyptic number.

2155036738 is a deficient number, since it is larger than the sum of its proper divisors (1079026250).

2155036738 is a wasteful number, since it uses less digits than its factorization.

2155036738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 502628.

The product of its (nonzero) digits is 151200, while the sum is 40.

The square root of 2155036738 is about 46422.3732482518. The cubic root of 2155036738 is about 1291.6699599019.

The spelling of 2155036738 in words is "two billion, one hundred fifty-five million, thirty-six thousand, seven hundred thirty-eight".