1869640834 has 8 divisors (see below), whose sum is σ = 2804754960. Its totient is φ = 934722516.

The previous prime is 1869640823. The next prime is 1869640837. The reversal of 1869640834 is 4380469681.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×1869640834³ (a number of 29 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (1869640837) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22144 + ... + 65035.

It is an arithmetic number, because the mean of its divisors is an integer number (350594370).

Almost surely, 2^1869640834 is an apocalyptic number.

1869640834 is a deficient number, since it is larger than the sum of its proper divisors (935114126).

1869640834 is a wasteful number, since it uses less digits than its factorization.

1869640834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97904.

The product of its (nonzero) digits is 995328, while the sum is 49.

The square root of 1869640834 is about 43239.3435889122. The cubic root of 1869640834 is about 1231.9300858629.

The spelling of 1869640834 in words is "one billion, eight hundred sixty-nine million, six hundred forty thousand, eight hundred thirty-four".