2155151019 has 64 divisors (see below), whose sum is σ = 3617832960. Its totient is φ = 1113626880.

The previous prime is 2155151017. The next prime is 2155151021. The reversal of 2155151019 is 9101515512.

It is an interprime number because it is at equal distance from previous prime (2155151017) and next prime (2155151021).

It is not a de Polignac number, because 2155151019 - 2¹ = 2155151017 is a prime.

It is a super-2 number, since 2×2155151019² = 9289351829393476722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2155151017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 767472 + ... + 770274.

It is an arithmetic number, because the mean of its divisors is an integer number (56528640).

Almost surely, 2^2155151019 is an apocalyptic number.

2155151019 is a deficient number, since it is larger than the sum of its proper divisors (1462681941).

2155151019 is a wasteful number, since it uses less digits than its factorization.

2155151019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2920.

The product of its (nonzero) digits is 2250, while the sum is 30.

The square root of 2155151019 is about 46423.6041147173. The cubic root of 2155151019 is about 1291.6927917981.

The spelling of 2155151019 in words is "two billion, one hundred fifty-five million, one hundred fifty-one thousand, nineteen".