945981622 has 4 divisors (see below), whose sum is σ = 1418972436. Its totient is φ = 472990810.

The previous prime is 945981599. The next prime is 945981661. The reversal of 945981622 is 226189549.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 226189549 = 11437 ⋅19777.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 236495404 + ... + 236495407.

It is an arithmetic number, because the mean of its divisors is an integer number (354743109).

Almost surely, 2^945981622 is an apocalyptic number.

945981622 is a deficient number, since it is larger than the sum of its proper divisors (472990814).

945981622 is a wasteful number, since it uses less digits than its factorization.

945981622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 472990813.

The product of its digits is 311040, while the sum is 46.

The square root of 945981622 is about 30756.8142368484. The cubic root of 945981622 is about 981.6595586121.

The spelling of 945981622 in words is "nine hundred forty-five million, nine hundred eighty-one thousand, six hundred twenty-two".