1941821039 has 16 divisors (see below), whose sum is σ = 2095683840. Its totient is φ = 1792506240.

The previous prime is 1941821029. The next prime is 1941821053. The reversal of 1941821039 is 9301281491.

It is a cyclic number.

It is not a de Polignac number, because 1941821039 - 2²⁸ = 1673385583 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1941820993 and 1941821011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1941821029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 490502 + ... + 494444.

It is an arithmetic number, because the mean of its divisors is an integer number (130980240).

Almost surely, 2^1941821039 is an apocalyptic number.

1941821039 is a deficient number, since it is larger than the sum of its proper divisors (153862801).

1941821039 is a wasteful number, since it uses less digits than its factorization.

1941821039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4510.

The product of its (nonzero) digits is 15552, while the sum is 38.

The square root of 1941821039 is about 44066.0985225604. The cubic root of 1941821039 is about 1247.5838209924.

The spelling of 1941821039 in words is "one billion, nine hundred forty-one million, eight hundred twenty-one thousand, thirty-nine".