2155115434 has 16 divisors (see below), whose sum is σ = 3309979968. Its totient is φ = 1052073792.

The previous prime is 2155115377. The next prime is 2155115437. The reversal of 2155115434 is 4345115512.

It is a junction number, because it is equal to n+sod(n) for n = 2155115396 and 2155115405.

It is not an unprimeable number, because it can be changed into a prime (2155115437) 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, 56022 + ... + 86305.

It is an arithmetic number, because the mean of its divisors is an integer number (206873748).

Almost surely, 2^2155115434 is an apocalyptic number.

2155115434 is a deficient number, since it is larger than the sum of its proper divisors (1154864534).

2155115434 is a wasteful number, since it uses less digits than its factorization.

2155115434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142509.

The product of its digits is 12000, while the sum is 31.

The square root of 2155115434 is about 46423.2208490535. The cubic root of 2155115434 is about 1291.6856824524.

The spelling of 2155115434 in words is "two billion, one hundred fifty-five million, one hundred fifteen thousand, four hundred thirty-four".