2091433145 has 8 divisors (see below), whose sum is σ = 2510466504. Its totient is φ = 1672648704.

The previous prime is 2091433139. The next prime is 2091433147. The reversal of 2091433145 is 5413341902.

It can be written as a sum of positive squares in 4 ways, for example, as 383161 + 2091049984 = 619^2 + 45728^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 2091433145 - 2⁶ = 2091433081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2091433147) 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, 43214 + ... + 77783.

It is an arithmetic number, because the mean of its divisors is an integer number (313808313).

Almost surely, 2^2091433145 is an apocalyptic number.

It is an amenable number.

2091433145 is a deficient number, since it is larger than the sum of its proper divisors (419033359).

2091433145 is a wasteful number, since it uses less digits than its factorization.

2091433145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124459.

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 2091433145 is about 45732.1893746626. The cubic root of 2091433145 is about 1278.8354367559.

The spelling of 2091433145 in words is "two billion, ninety-one million, four hundred thirty-three thousand, one hundred forty-five".