1946491243 has 8 divisors (see below), whose sum is σ = 1980750960. Its totient is φ = 1912273920.

The previous prime is 1946491231. The next prime is 1946491307. The reversal of 1946491243 is 3421946491.

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 1946491243 - 2⁹ = 1946490731 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1946491243.

It is not an unprimeable number, because it can be changed into a prime (1946491213) 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, 90403 + ... + 109843.

It is an arithmetic number, because the mean of its divisors is an integer number (247593870).

Almost surely, 2^1946491243 is an apocalyptic number.

1946491243 is a deficient number, since it is larger than the sum of its proper divisors (34259717).

1946491243 is a wasteful number, since it uses less digits than its factorization.

1946491243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21197.

The product of its digits is 186624, while the sum is 43.

The square root of 1946491243 is about 44119.0575941962. The cubic root of 1946491243 is about 1248.5831932403.

The spelling of 1946491243 in words is "one billion, nine hundred forty-six million, four hundred ninety-one thousand, two hundred forty-three".