1891937084 has 12 divisors (see below), whose sum is σ = 3485147400. Its totient is φ = 896180688.

The previous prime is 1891937083. The next prime is 1891937137. The reversal of 1891937084 is 4807391981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1891937081) 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, 12446879 + ... + 12447030.

It is an arithmetic number, because the mean of its divisors is an integer number (290428950).

Almost surely, 2^1891937084 is an apocalyptic number.

It is an amenable number.

1891937084 is a deficient number, since it is larger than the sum of its proper divisors (1593210316).

1891937084 is a wasteful number, since it uses less digits than its factorization.

1891937084 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24893932 (or 24893930 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 50.

The square root of 1891937084 is about 43496.4031156600. The cubic root of 1891937084 is about 1236.8078412643.

The spelling of 1891937084 in words is "one billion, eight hundred ninety-one million, nine hundred thirty-seven thousand, eighty-four".