1834971440 has 20 divisors (see below), whose sum is σ = 4266308784. Its totient is φ = 733988544.

The previous prime is 1834971431. The next prime is 1834971443. The reversal of 1834971440 is 441794381.

It is a tau number, because it is divible by the number of its divisors (20).

It is not an unprimeable number, because it can be changed into a prime (1834971443) 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 3 ways as a sum of consecutive naturals, for example, 11468492 + ... + 11468651.

Almost surely, 2^1834971440 is an apocalyptic number.

1834971440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1834971440 is an abundant number, since it is smaller than the sum of its proper divisors (2431337344).

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

1834971440 is a wasteful number, since it uses less digits than its factorization.

1834971440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22937156 (or 22937150 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 41.

The square root of 1834971440 is about 42836.5666224547. The cubic root of 1834971440 is about 1224.2678262511.

The spelling of 1834971440 in words is "one billion, eight hundred thirty-four million, nine hundred seventy-one thousand, four hundred forty".