1945147143 has 8 divisors (see below), whose sum is σ = 2604661488. Its totient is φ = 1291198784.

The previous prime is 1945147093. The next prime is 1945147147. The reversal of 1945147143 is 3417415491.

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 1945147143 - 2¹⁸ = 1944884999 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1945147147) 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 7 ways as a sum of consecutive naturals, for example, 1390680 + ... + 1392077.

It is an arithmetic number, because the mean of its divisors is an integer number (325582686).

Almost surely, 2^1945147143 is an apocalyptic number.

1945147143 is a deficient number, since it is larger than the sum of its proper divisors (659514345).

1945147143 is a wasteful number, since it uses less digits than its factorization.

1945147143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2782993.

The product of its digits is 60480, while the sum is 39.

The square root of 1945147143 is about 44103.8223173457. The cubic root of 1945147143 is about 1248.2957346129.

The spelling of 1945147143 in words is "one billion, nine hundred forty-five million, one hundred forty-seven thousand, one hundred forty-three".