1921135674 has 32 divisors (see below), whose sum is σ = 4013712000. Its totient is φ = 611866112.

The previous prime is 1921135663. The next prime is 1921135691. The reversal of 1921135674 is 4765311291.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 127702 + ... + 141950.

It is an arithmetic number, because the mean of its divisors is an integer number (125428500).

Almost surely, 2^1921135674 is an apocalyptic number.

1921135674 is an abundant number, since it is smaller than the sum of its proper divisors (2092576326).

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

1921135674 is a wasteful number, since it uses less digits than its factorization.

1921135674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15254.

The product of its digits is 45360, while the sum is 39.

The square root of 1921135674 is about 43830.7617319161. The cubic root of 1921135674 is about 1243.1380098565.

The spelling of 1921135674 in words is "one billion, nine hundred twenty-one million, one hundred thirty-five thousand, six hundred seventy-four".