1428367811 has 16 divisors (see below), whose sum is σ = 1589575680. Its totient is φ = 1274585760.

The previous prime is 1428367751. The next prime is 1428367813. The reversal of 1428367811 is 1187638241.

It is a cyclic number.

It is not a de Polignac number, because 1428367811 - 2¹⁴ = 1428351427 is a prime.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1428367813) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 636830 + ... + 639068.

It is an arithmetic number, because the mean of its divisors is an integer number (99348480).

Almost surely, 2^1428367811 is an apocalyptic number.

1428367811 is a deficient number, since it is larger than the sum of its proper divisors (161207869).

1428367811 is a wasteful number, since it uses less digits than its factorization.

1428367811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3866.

The product of its digits is 64512, while the sum is 41.

The square root of 1428367811 is about 37793.7535976516. The cubic root of 1428367811 is about 1126.1943690009.

The spelling of 1428367811 in words is "one billion, four hundred twenty-eight million, three hundred sixty-seven thousand, eight hundred eleven".