1284067345 has 16 divisors (see below), whose sum is σ = 1754047872. Its totient is φ = 893263360.

The previous prime is 1284067331. The next prime is 1284067417. The reversal of 1284067345 is 5437604821.

1284067345 = 307² + 308² + ... + 1571².

It is not a de Polignac number, because 1284067345 - 2⁷ = 1284067217 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1284067298 and 1284067307.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 506272 + ... + 508801.

It is an arithmetic number, because the mean of its divisors is an integer number (109627992).

Almost surely, 2^1284067345 is an apocalyptic number.

It is an amenable number.

1284067345 is a deficient number, since it is larger than the sum of its proper divisors (469980527).

1284067345 is a wasteful number, since it uses less digits than its factorization.

1284067345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1015112.

The product of its (nonzero) digits is 161280, while the sum is 40.

The square root of 1284067345 is about 35833.8854298554. The cubic root of 1284067345 is about 1086.9158799092.

The spelling of 1284067345 in words is "one billion, two hundred eighty-four million, sixty-seven thousand, three hundred forty-five".