1840137705 has 24 divisors (see below), whose sum is σ = 3645225792. Its totient is φ = 841205664.

The previous prime is 1840137683. The next prime is 1840137709. The reversal of 1840137705 is 5077310481.

It is not a de Polignac number, because 1840137705 - 2⁶ = 1840137641 is a prime.

It is a super-2 number, since 2×1840137705² = 6772213546725334050, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1840137705.

It is not an unprimeable number, because it can be changed into a prime (1840137709) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2920539 + ... + 2921168.

It is an arithmetic number, because the mean of its divisors is an integer number (151884408).

Almost surely, 2^1840137705 is an apocalyptic number.

1840137705 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1840137705 is a deficient number, since it is larger than the sum of its proper divisors (1805088087).

1840137705 is a wasteful number, since it uses less digits than its factorization.

1840137705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5841725 (or 5841722 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 36.

The square root of 1840137705 is about 42896.8262812064. The cubic root of 1840137705 is about 1225.4157034244.

The spelling of 1840137705 in words is "one billion, eight hundred forty million, one hundred thirty-seven thousand, seven hundred five".