2145435444 has 24 divisors (see below), whose sum is σ = 5562240320. Its totient is φ = 715145112.

The previous prime is 2145435437. The next prime is 2145435451. The reversal of 2145435444 is 4445345412.

2145435444 is a `hidden beast` number, since 21 + 4 + 543 + 54 + 44 = 666.

It is an interprime number because it is at equal distance from previous prime (2145435437) and next prime (2145435451).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 2145435399 and 2145435408.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9932464 + ... + 9932679.

Almost surely, 2^2145435444 is an apocalyptic number.

It is an amenable number.

2145435444 is an abundant number, since it is smaller than the sum of its proper divisors (3416804876).

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

2145435444 is a wasteful number, since it uses less digits than its factorization.

2145435444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19865156 (or 19865148 counting only the distinct ones).

The product of its digits is 153600, while the sum is 36.

The square root of 2145435444 is about 46318.8454519324. The cubic root of 2145435444 is about 1289.7488532173.

The spelling of 2145435444 in words is "two billion, one hundred forty-five million, four hundred thirty-five thousand, four hundred forty-four".