2091138932 has 24 divisors (see below), whose sum is σ = 3821755392. Its totient is φ = 999284000.

The previous prime is 2091138913. The next prime is 2091138937. The reversal of 2091138932 is 2398311902.

It is a super-2 number, since 2×2091138932² = 8745724065852201248, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2091138937) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 110957 + ... + 128427.

It is an arithmetic number, because the mean of its divisors is an integer number (159239808).

Almost surely, 2^2091138932 is an apocalyptic number.

It is an amenable number.

2091138932 is a deficient number, since it is larger than the sum of its proper divisors (1730616460).

2091138932 is a wasteful number, since it uses less digits than its factorization.

2091138932 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18799 (or 18797 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 38.

The square root of 2091138932 is about 45728.9725666344. The cubic root of 2091138932 is about 1278.7754670877.

The spelling of 2091138932 in words is "two billion, ninety-one million, one hundred thirty-eight thousand, nine hundred thirty-two".