1428924819 has 24 divisors (see below), whose sum is σ = 2287792128. Its totient is φ = 790186320.

The previous prime is 1428924803. The next prime is 1428924823. The reversal of 1428924819 is 9184298241.

It is not a de Polignac number, because 1428924819 - 2⁴ = 1428924803 is a prime.

It is a super-2 number, since 2×1428924819² = 4083652276708365522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1428924829) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 152227 + ... + 161340.

It is an arithmetic number, because the mean of its divisors is an integer number (95324672).

Almost surely, 2^1428924819 is an apocalyptic number.

1428924819 is a deficient number, since it is larger than the sum of its proper divisors (858867309).

1428924819 is a wasteful number, since it uses less digits than its factorization.

1428924819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313615 (or 313608 counting only the distinct ones).

The product of its digits is 331776, while the sum is 48.

The square root of 1428924819 is about 37801.1219277947. The cubic root of 1428924819 is about 1126.3407406719.

The spelling of 1428924819 in words is "one billion, four hundred twenty-eight million, nine hundred twenty-four thousand, eight hundred nineteen".