1428650943 has 4 divisors (see below), whose sum is σ = 1904867928. Its totient is φ = 952433960.

The previous prime is 1428650939. The next prime is 1428650969. The reversal of 1428650943 is 3490568241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3490568241 = 3 ⋅1163522747.

It is a cyclic number.

It is not a de Polignac number, because 1428650943 - 2² = 1428650939 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1428650895 and 1428650904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1428650243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 238108488 + ... + 238108493.

It is an arithmetic number, because the mean of its divisors is an integer number (476216982).

Almost surely, 2^1428650943 is an apocalyptic number.

1428650943 is a deficient number, since it is larger than the sum of its proper divisors (476216985).

1428650943 is an equidigital number, since it uses as much as digits as its factorization.

1428650943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 476216984.

The product of its (nonzero) digits is 207360, while the sum is 42.

The square root of 1428650943 is about 37797.4991633044. The cubic root of 1428650943 is about 1126.2687757458.

The spelling of 1428650943 in words is "one billion, four hundred twenty-eight million, six hundred fifty thousand, nine hundred forty-three".