1428860019 has 32 divisors (see below), whose sum is σ = 2011060224. Its totient is φ = 901496960.

The previous prime is 1428860011. The next prime is 1428860051. The reversal of 1428860019 is 9100688241.

It is a cyclic number.

It is not a de Polignac number, because 1428860019 - 2³ = 1428860011 is a prime.

It is a super-2 number, since 2×1428860019² = 4083281907793360722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1428860011) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 529237 + ... + 531929.

It is an arithmetic number, because the mean of its divisors is an integer number (62845632).

Almost surely, 2^1428860019 is an apocalyptic number.

1428860019 is a deficient number, since it is larger than the sum of its proper divisors (582200205).

1428860019 is a wasteful number, since it uses less digits than its factorization.

1428860019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2867.

The product of its (nonzero) digits is 27648, while the sum is 39.

The square root of 1428860019 is about 37800.2648006598. The cubic root of 1428860019 is about 1126.3237143543.

The spelling of 1428860019 in words is "one billion, four hundred twenty-eight million, eight hundred sixty thousand, nineteen".