1840740945 has 32 divisors (see below), whose sum is σ = 3085074432. Its totient is φ = 935428032.

The previous prime is 1840740931. The next prime is 1840740949. The reversal of 1840740945 is 5490470481.

It is not a de Polignac number, because 1840740945 - 2²³ = 1832352337 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1840740897 and 1840740906.

It is not an unprimeable number, because it can be changed into a prime (1840740949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 80592 + ... + 100878.

It is an arithmetic number, because the mean of its divisors is an integer number (96408576).

Almost surely, 2^1840740945 is an apocalyptic number.

1840740945 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1840740945 is a deficient number, since it is larger than the sum of its proper divisors (1244333487).

1840740945 is a wasteful number, since it uses less digits than its factorization.

1840740945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20581.

The product of its (nonzero) digits is 161280, while the sum is 42.

The square root of 1840740945 is about 42903.8569944475. The cubic root of 1840740945 is about 1225.5495953978.

The spelling of 1840740945 in words is "one billion, eight hundred forty million, seven hundred forty thousand, nine hundred forty-five".