1782056145 has 16 divisors (see below), whose sum is σ = 2853639360. Its totient is φ = 949646784.

The previous prime is 1782056141. The next prime is 1782056147. The reversal of 1782056145 is 5416502871.

It is not a de Polignac number, because 1782056145 - 2² = 1782056141 is a prime.

It is a super-2 number, since 2×1782056145² = 6351448207864522050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1782056141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29899 + ... + 66768.

It is an arithmetic number, because the mean of its divisors is an integer number (178352460).

Almost surely, 2^1782056145 is an apocalyptic number.

1782056145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1782056145 is a deficient number, since it is larger than the sum of its proper divisors (1071583215).

1782056145 is a wasteful number, since it uses less digits than its factorization.

1782056145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97904.

The product of its (nonzero) digits is 67200, while the sum is 39.

The square root of 1782056145 is about 42214.4068417407. The cubic root of 1782056145 is about 1212.3847386804.

The spelling of 1782056145 in words is "one billion, seven hundred eighty-two million, fifty-six thousand, one hundred forty-five".