1941561345 has 8 divisors (see below), whose sum is σ = 3106498176. Its totient is φ = 1035499376.

The previous prime is 1941561329. The next prime is 1941561361. The reversal of 1941561345 is 5431651491.

It is an interprime number because it is at equal distance from previous prime (1941561329) and next prime (1941561361).

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 1941561345 - 2⁴ = 1941561329 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64718697 + ... + 64718726.

It is an arithmetic number, because the mean of its divisors is an integer number (388312272).

Almost surely, 2^1941561345 is an apocalyptic number.

1941561345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1941561345 is a deficient number, since it is larger than the sum of its proper divisors (1164936831).

1941561345 is a wasteful number, since it uses less digits than its factorization.

1941561345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129437431.

The product of its digits is 64800, while the sum is 39.

The square root of 1941561345 is about 44063.1517824134. The cubic root of 1941561345 is about 1247.5282023281.

The spelling of 1941561345 in words is "one billion, nine hundred forty-one million, five hundred sixty-one thousand, three hundred forty-five".