1941259381 has 4 divisors (see below), whose sum is σ = 1986404992. Its totient is φ = 1896113772.

The previous prime is 1941259379. The next prime is 1941259399. The reversal of 1941259381 is 1839521491.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1839521491 = 4877 ⋅377183.

It is a cyclic number.

It is not a de Polignac number, because 1941259381 - 2¹ = 1941259379 is a prime.

It is a super-2 number, since 2×1941259381² = 7536975968641006322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (43), and also a Moran number because the ratio is a prime number: 45145567 = 1941259381 / (1 + 9 + 4 + 1 + 2 + 5 + 9 + 3 + 8 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1941259301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22572741 + ... + 22572826.

It is an arithmetic number, because the mean of its divisors is an integer number (496601248).

Almost surely, 2^1941259381 is an apocalyptic number.

It is an amenable number.

1941259381 is a deficient number, since it is larger than the sum of its proper divisors (45145611).

1941259381 is an equidigital number, since it uses as much as digits as its factorization.

1941259381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45145610.

The product of its digits is 77760, while the sum is 43.

The square root of 1941259381 is about 44059.7251580170. The cubic root of 1941259381 is about 1247.4635244615.

The spelling of 1941259381 in words is "one billion, nine hundred forty-one million, two hundred fifty-nine thousand, three hundred eighty-one".