2145415340 has 24 divisors (see below), whose sum is σ = 4610150160. Its totient is φ = 838208448.

The previous prime is 2145415333. The next prime is 2145415369. The reversal of 2145415340 is 435145412.

It is a super-2 number, since 2×2145415340² = 9205613962214631200, which contains 22 as substring.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1246475 + ... + 1248194.

It is an arithmetic number, because the mean of its divisors is an integer number (192089590).

Almost surely, 2^2145415340 is an apocalyptic number.

2145415340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2145415340 is an abundant number, since it is smaller than the sum of its proper divisors (2464734820).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2145415340 is a wasteful number, since it uses less digits than its factorization.

2145415340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2494721 (or 2494719 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 29.

The square root of 2145415340 is about 46318.6284339249. The cubic root of 2145415340 is about 1289.7448246347.

The spelling of 2145415340 in words is "two billion, one hundred forty-five million, four hundred fifteen thousand, three hundred forty".