1966431742 has 24 divisors (see below), whose sum is σ = 3346773696. Its totient is φ = 864996000.

The previous prime is 1966431707. The next prime is 1966431781. The reversal of 1966431742 is 2471346691.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 123559 + ... + 138562.

It is an arithmetic number, because the mean of its divisors is an integer number (139448904).

Almost surely, 2^1966431742 is an apocalyptic number.

1966431742 is a deficient number, since it is larger than the sum of its proper divisors (1380341954).

1966431742 is a wasteful number, since it uses less digits than its factorization.

1966431742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262176 (or 262165 counting only the distinct ones).

The product of its digits is 217728, while the sum is 43.

The square root of 1966431742 is about 44344.4668701745. The cubic root of 1966431742 is about 1252.8323490186.

The spelling of 1966431742 in words is "one billion, nine hundred sixty-six million, four hundred thirty-one thousand, seven hundred forty-two".