1802640434 has 32 divisors (see below), whose sum is σ = 3146242176. Its totient is φ = 758684160.

The previous prime is 1802640419. The next prime is 1802640457. The reversal of 1802640434 is 4340462081.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1802640434.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 172832 + ... + 182964.

It is an arithmetic number, because the mean of its divisors is an integer number (98320068).

Almost surely, 2^1802640434 is an apocalyptic number.

1802640434 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1802640434 is a deficient number, since it is larger than the sum of its proper divisors (1343601742).

1802640434 is a wasteful number, since it uses less digits than its factorization.

1802640434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10370.

The product of its (nonzero) digits is 18432, while the sum is 32.

The square root of 1802640434 is about 42457.5132809259. The cubic root of 1802640434 is about 1217.0349104725.

The spelling of 1802640434 in words is "one billion, eight hundred two million, six hundred forty thousand, four hundred thirty-four".